Carburetors, Jet Kits, Air Filters, Fuel Filters, EFI Control Modules
Basic Carburetors Tech Talk: https://youtu.be/KGR6-RsXVKg
The Mikuni TM42-6 HSR flows 17CFM more than the TM40-6 and incorporates many upgraded features such as a roller-bearing slide.
All this means going even faster has never been so easy, say goodbye to hard starting, hesitations and flat spots.
Softer return spring for your TM40 carburetor.
This replaces the stock return spring that comes with the TM40 carburetor creating a 25% lighter throttle feel.
These Mikuni carburetors are correctly sized and easily fitted to your Honda XR600 and XR650L stock motor mounting flange after removing the locator tags and also match the air box when using the silver anodized air-box adapter. This adapter is fitted prior to delivery when purchasing complete kits. For this Mikuni carburetor to operate correctly the motorcycles air box must be opened up to allow more air flow in. Using a hole saw, a 45mm diameter hole will be sufficient for a Suzuki DR650 but some Honda’s require way more. The best process is to keep opening up the air-box until no more improvement is noticed and you will be surprised at the difference. The kit also comes with throttle cables and a 1/4 turn quick action throttle which must be lubed before fitment. The carb comes with a couple of Honda specific adjustments made and pre jetted for your engine. A specially made size 30 pump nozzle is fitted as the accelerator pump circuit on TM42 carbs will not work properly on Honda’s or Kawasaki’s without it.
Climate, altitude and fuel density from different octane fuels all have varying effects on final fine tuning as does cam, exhaust and cylinder head porting etc. For this reason, we have included what we have found to be a range of jets to allow you to tune to most variables.
This carb fits with most aftermarket large capacity tanks. Some larger capacity tanks do not allow the fitment of this carb without modification. A competent person can easily heat and depress the contact area around the throttle mechanism allowing for clearance on problem tanks. Polyethylene tanks start their life as lump of poly that when melted evenly spreads itself around a rotating mold, to later carefully heat with a heat gun any section of a tank and change the shape has no effect on the integrity of the poly itself unless pushed too far, thinning it. We recommend having this professionally done for the reason some people may neglect to properly remove all the fuel from an existing tank or if not competent may make a mess of it.
Want an amazing increase in throttle response? More power over a much wider range? The Mikuni TM40 does all of that plus runs smoother at lower RPMs and pulls taller gearing with ease.
Our complete kit comes with alloy adapter rings bonded to the genuine TM40 carburetor body for a firm reliable fit in the stock air boots. We also include new low friction cables, an extended fuel screw, complete instructions along with a wide range of extra jetting for fine tuning. It even has a vacuum port for the stock fuel petcock.
The carburetor comes pre-jetted for the typical mods: performance pipe and modified air box, or we can set it up for your particular bike before we ship it out.
Instead of the tough to reach choke knob, all TM40's come with a remote choke and bracket. This makes it easier to reach the knob, especially if you have an oversize tank.
Replacement Air Cutoff valve from Yamaha
Kit Includes:
Strip out the bowl screws on your KLR? Carb top screws get rusty? Here is a set of 4 allen screws and lock washers for the bowl and 4 allens and flat washers for the vacuum top.
Extended float bowl screws from Wirth Machine for your TM40 that use 1/4" size wrench to loosen. Allowing easy access to your jets and float without having to remove the carburetor from the bike. Sold in a 4 pack. Stainless steel threads.
Extended float bowl screws from Wirth Machine for your OEM BST carburetor that use 5/6" or 8mm size wrench to loosen. Allowing easy access to your jets and float without having to remove the carburetor from the bike. Sold in a 2 pack. Stainless steel threads.
Replacement socket head (Allen) screws in case you strip out the stock JIS heads on your TM40 bowl. The originals can be stripped out when doing any tuning or carburetor maintenance. Sold in a pack of four, all for the bowl.
Replacement socket head (Allen) screws for the OEM BST40 Carburetor. The factory screws that hold the top cap and float bowl on the stock carburetor are very easily damaged. The originals are usually installed unbelievably tight from the factory. It is common to ruin the stock screws when installing a jet kit or doing any other carburetor maintenance. Sold in a pack of four. Two for the cap and two for the float bowl.
All the advantages of a flatslide pumper carburetor at a much friendlier price than a Keihin FCR.
Our complete genuine Mikuni TM40 pumper carburetor kit comes with alloy adapter rings bonded to the carburetor body for a firm reliable fit in the stock air boots. We also include new 3" longer than stock throttle cables, a remote mounted choke knob, complete instructions along with a wide range of main jets and pilot jets for fine tuning or to accommodate bikes with extensive modifications.
All the advantages of a flatslide pumper carburetor at a much friendlier price than a Keihin FCR.
Our complete genuine Mikuni TM40 pumper carburetor kit comes with alloy adapter rings bonded to the carburetor body for a firm reliable fit in the stock air boots. We also include a remote mounted choke knob, complete instructions along with a wide range of main jets and pilot jets for fine tuning or to accommodate bikes with extensive modifications.
R&D introduces "Flex-Jet", a simple, effective flexible shaft design. Quick adjustments are now within easy reach. Besides easy access, another benefit is the Flex-Jet's ability to hold its setting. Loose fuel screws are now a thing of the past. Kit includes: Flex-Jet (Remote Fuel Screw), bracket, screw, spring, washer, O-ring and instructions.
Not for the stock DR650 carburetor Fits FCR-MX conversions Only.
Top quality brass screw with molded knob for easy adjustments.
Not for the stock DR650 carburetor Fits FCR-MX conversions Only.
Contains genuine KEIHIN parts to rebuild your FCR41 pumper. Fresh o-rings and float needle insure you don't end up with a crank case full of fuel.
Not for the stock carburetor. Fits FCR41 conversions only.
Quality rebuild kit by Moose Racing. Comes with everything you need to get your stock carburetor back in shape!
This brass fuel screw offers a longer head to give you a better hold for making adjustments. This is a nice improvement over the standard extended fuel screw. Kit includes one new screw, spring, washer and o-ring.
Direct replacement for the stock spring and exactly like the old Merge Racing spring. Gives a much more consistent accelerator pump squirt. Eliminates the need for the 'O-ring mod', wire or zip-ties on the pump arm. Fits all Keihin FCR-MX carbs except '07-'08 CRF250/450.
Not for the stock DR650 carburetor Fits FCR-MX conversion Only
Repair kit comes with everything you need to get your carb back in shape.
Here is the O-Ring that fits in the carburetor manifold. This is the manifold that holds the carb up to the cylinder head. The O-Ring mounts between this manifold and the cylinder head. When this O-Ring fails it allows air into your cylinder and makes your Air Fuel ratio too lean which causes the engine to run too hot.
This Kit replaces vital components in the BST40 Carburetor including new o-rings, gaskets, jets, needle, mixture screw, float bowl screws, float valve needle and seat (needle jet and other pressed in jets are not included in kit) to return the stock Mikuni BST40 Carburetor to like-new operation. As a bonus we have included Viton o-rings for the float assembly and 4 stainless steel allen screws.
The Remote Fuel Mixture Screw is 5 inches longer than stock. This gives you plenty of length to easily mount in a convenient location. Will work with the stock BST Carburetor as well as the TM40 pumper Carburetor.
This kit includes all necessary components to repair your carburetor.
O.E.M. jet sizes are included in the kit.
This Kit replaces vital components in the BST40 Carburetor including new a Float, Needle Valve, Gaskets, Seals, Diaphragm, Spring and Float Bowl Screws to return the stock Mikuni BST40 Carburetor to like-new operation. As a bonus we have included Viton o-rings for the float assembly and 4 stainless steel allen screws.
Replaces the stock screw. Easy adjustment, without a screwdriver, of fuel mixture while the bike is running. For Keihin FCR carburetors.
Repair leaking carburetor or worn out float needle assembly.
The Phillips screws in Japanese motorcycles are not really Phillips screws. They are actually Japanese Industrial Standard (JIS) screws that are very easy to strip with Phillips head drivers.
Comes with everything you need to freshen up your carburetor.
Replace the worn slide guide in your stock Mikuni BST carburetor before it causes additional wear to the needle and needle jet. There are wear indicators on the slide guide that help you recognize when it is time to replace your slide guide. New O-ring included.
A new slide for the stock Mikuni BST carburetor.
Replace your worn out Mikuni stock drain hoses when they get old and brittle with a replacement hose set.
These 3/16" hoses are measured and pre-cut to length. Kit includes all hoses that fit the Mikuni carburetor.
Genuine Keihin spring, washer, and oring for the fuel screw of FCR and FCR MX carbs.
Just the parts…
Fuel screw spring, washer, o-ring (fuel screw not included)
Genuine FCR-MX Carburetor Rebuild Kit
Not for the stock BST DR650 carburetor, Fits FCR-MX conversions Only
Complete kit to rebuild OEM carburetors.
Has your TM40 carburetor been sitting for too long and now needs to be rebuilt? Then what you need is this TM40 Rebuild Kit that contains Genuine Mikuni replacement parts.
This kit includes:
Kientech Fuel Screw for Suzuki DRZ400S/SM with the Mikuni BSR 36mm carb only. This fuel screw does NOT work on Keihin carbs.
This is an O.E. replacement diaphragm for your BST40 carburetor.
Rebuild your crusty carburetor with parts from the same manufacturer the OEM companies use. Included in the kit are all necessary gaskets, O-rings, float valve and jets you need to rebuild your carburetor to like new condition.
Included in this kit are the parts needed to repair a second generation TK carburetor. You get a new float bowl gasket, needle valve with O-ring, needle, mixture screw, and stock jets for the '01-'21 models kits.
This is a new Diaphragm Set for your 1987-2000 TK carburetor. If yours has cracked or ripped, here is a replacement.
A complete kit to rebuild and refresh your stock carburetor. Kit contains Genuine Mikuni replacement parts.
**Due to varying model requirements, this kit does not include main or pilot jets.
Each kit contains float bowl gasket (or o-ring), float valve assembly (or float needle) and o-rings to rebuild one OEM carburetor body.
Hate the handlebar mounted choke lever? Can't reach the choke knob? Does your Safari or IMS tank make using the choke difficult?
Our adjustable cable operated choke knob mounts to the left side engine case and works for either the stock BST or Mikuni TM40.
Replacement rubber boot for choke knob assembly.
Replace your handlebar mounted choke with this simple knob mounted directly on the carburetor.
Available in short or long reach.
Long reach is easier to use while wearing riding gloves.
Works for either the stock BST or Mikuni TM40.
The map selection switch allows the rider to switch between two different maps "on the fly" within the Power Commander V.
The New Power Commander V is loaded with tons of new features.
Don't have a dyno tuning center nearby? Are you more of a do it yourself type? Are you constantly changing parts on your bike?
If you answer "yes" to any or all of the questions above, then our Auto Tune kit is for you. The Dynojet Auto Tune kit is an "add on" accessory that can be used with any of the Power Commander Vs
It connects to the PCV with a single cable and requires only a ground and +12 volt connection to be made to install. If your exhaust does not already have one, a "weld in" O2 sensor bung is included
Once installed, the Auto Tune kit monitors the fuel mixture (by installing the included Wide Band O2 sensor in the exhaust). It then sends this information to the Power Commander V and automatically corrects it while you ride. Each map that we offer has preset Air/Fuel ratio values included that we find to be the best overall settings. This lets you simply plug in the unit and let it do the work.
*NEW OFFERING
The Dynojet Auto Tune kit is an "add on" accessory that can be used with any of our Power Commander V’s. It connects to the PCV with a single cable and requires only a ground and +12 volt connection to be made to install. If your exhaust does not already have one, a "weld in" O2 sensor bung is included.
Once installed, the Auto Tune kit monitors the fuel mixture (by installing the included Wide Band O2 sensor in the exhaust). It then sends this information to the Power Commander V and automatically corrects it while you ride. Each map that we offer has preset Air/Fuel ratio values included that we find to be the best overall settings. This lets you simply plug in the unit and let it do the work.
POD-300 Digital Display
Simply connect the included CAN cable and you’re ready to go; there’s no need to tap power or deal with other messy connections.
Two-position map-switching is capable with this Single Pole, Single Throw switch. You can toggle between two different fuel maps quickly and easily.
For Use with the DynoJet Power Commander V
Dyno and field tested, the Power Surge 6X will allow correction for humidity, temperature, air pressure, along with race fuels and motor modifications. The tuner adjusts in a matter of seconds in 6 zones, including an accelerator pump feature for more throttle snap response. The tuner can add or subtract fuel from the injection system. Conditions like rich or lean running, and stalling from flame-out at low revs can be corrected.
The perfect tuner for users who are always on the move, the Power Vision 3 allows you to tap into more horsepower and optimize overall performance by quickly and easily flashing your ECU from anywhere.
Power Commander Fuel Controller (PCFC) Product Introduction
Inexpensive yet very precise way to control your fuel curve.
The Power Commander FC is a plug-n-play fuel management device pre-programmed with Make/ Model specific maps. In addition the Power Commander FC has the added ability to modify or change these maps on the fly without a computer.
Users can literally select between a Power Commander FC Map, custom-built maps, or even fine tune low, mid or high rpm ranges while sitting on the bike and without plugging into a computer. Standard +/- 15% increments from selected map settings, different ranges are available using the supplied Control Center software.
Users can also load up to 10 of their personally built Power Maps into the Power Commander FC and select between them while in the saddle - eliminating the need to "re-boot" with the computer every time a new map is desired.
PCFC Features:
This unit does NOT work with any of the Dynojet accessories - SFM, Ignition Module, shifter, LCD.
The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.
Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.
All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website.
The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.
Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.
All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website, or those you may have received from a third party.
(Map switch is not included. Sold Separately.)
Replaces the stock 2 wire Ruckus fuel level unit with a 3 wire unit that allows use of a multi-level fuel gauge.
The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.
Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.
All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website, or those you may have received from a third party.
Tried, true and tested the Power Commander continues to evolve with the Power Commander 6. Developed to simplify the user experience, PC6 makes choosing and tuning a map easier for the end user. All the same benefits you have relied on for over 20 years remain to keep you at the front of the pack.
The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.
Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.
All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website, or those you may have received from a third party.
Tried, true and tested the Power Commander continues to evolve with the Power Commander 6. Developed to simplify the user experience, PC6 makes choosing and tuning a map easier for the end user. All the same benefits you have relied on for over 20 years remain to keep you at the front of the pack.
The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.
Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.
All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website, or those you may have received from a third party.
Tried, true and tested the Power Commander continues to evolve with the Power Commander 6. Developed to simplify the user experience, PC6 makes choosing and tuning a map easier for the end user. All the same benefits you have relied on for over 20 years remain to keep you at the front of the pack.
The Power Commander 6 fuel injection tuning device allows you to optimize your fuel and timing curve (where applicable) giving you the confidence to roam freely. With fine tune adjustability and multiple inputs, the Power Commander 6 will keep your vehicle running at its full potential letting you concentrate on the journey ahead.
Featuring a plug-and-play setup, Power Commander 6 can be installed discreetly underneath your seat, cowl, dash or other location ensuring your ride looks as good as it runs. Removing the device reverts your vehicle completely back to stock. With the ability to store and switch between two maps on-the-fly (via the map switch accessory) and connect to various Power Commander accessories such as the Autotune, Quickshifter or POD-300, the Power Commander 6 gives you features and functions that provide you with the ultimate ride.
All PC6 models have an end-user adjustment of +/-15 in the FUEL table and +/- 8 in the timing table (if applicable). This adjustment is on top of the values that are in the BASE map loaded to the device. This BASE map can be any of the available maps from the Dynojet website, or those you may have received from a third party.
The EJK evolved out of the need to address the ever-increasing complexity of factory fuel injection. For the newcomer to the market or professionals wanting an easier method for tuning fuel injection, the EJK is a customizable solution for the rider that wants to take control of their tuning needs.
This unit is a piggy-back EFI controller because it does not replace the stock ECU, but rather monitors the signals to the injectors and makes fuel adjustments based on the mode settings. The GEN 3 has a push button interface allowing access up to 6 different modes to allow for quick fine tuning by the end user without needing a computer.
Key Features:
Most fuel injected systems are very lean in their stock configuration. This is good for economy and emissions, but not performance. This unit allows you to adjust the Fuel/Air (F/A) ratio without remapping the ECU and getting into complicated software programs. The PowerJet Fuel Controller allows you to adjust the fuel map from -4% to +10% by selecting one of 10 built-in settings (including stock).
The device works by measuring the outside air temperature very close to where the stock sensor is located and then adjusts the signal from the OEM air temperature sensor to the ECU to make use of the Air Temperature Correction factor that is built into the stock ECU. The ECU is told that the intake air is a little cooler than it actually is and it responds by richening the injection map very slightly. How much depends on your setting on the PowerJet. This will result in improved throttle response, especially if you have an aftermarket exhaust of any kind.
PowerJet is easily installed by plugging it in between the stock AIT sensor and the bike's wiring harness under the seat. This can be done very quickly as they are exactly the same plugs. Unplug the stock connection, plug in the PowerJet on each side. The PowerJet fits easily under the seat behind the battery as it is rugged and waterproof. PowerJet comes with a full one year warranty.
Original equipment replacement 'in-tank' fuel filter.
Traveling where fuel quality will be questionable? Carry a spare fuel filter.
This filter is meant for 5/16" fuel lines. Only 1/2" thick it is small enough to fit just about anywhere.
The small size and right angle hose barbs make this filter easier to fit into the small space between your fuel petcock and carburetor. Filter body is only 7/8" diameter. Straight filter is 2" long, 90 degree filter is only 1-5/8" long.
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
This kit is for the 36mm Mikuni CV carburetor and includes 2 Needles that have been developed by JD Jetting and manufactured for them to their exacting specifications. These two needles allow a wide range of tuning possibilities and provide correct fuel delivery at any throttle position.
4 allen type screws for the top of the carburetor are also enclosed should you strip out the stock screws during your tuning process. Complete instructions with photos, jetting suggestions for different set-ups and situations, 5 Main Jets, a Pilot Jet and a drill bit complete the package.
We all love our TWs, but the stock jetting leaves much to be desired! Here is a Jet Kit for your stock TK carburetor to improve your throttle response. Included in the Kit are a wide range of main jets to cover any setup, one Pilot Jet, one Jet Needle, and five Needle Shims. If you have added an exhaust system or ride at higher elevations, this is a great way to tune your TW for your needs.
Our own jet kit for the Mikuni TM40 carburetor.
Includes new main jets, pilot jets and a new needle with e-clip.
Comes with a printed Mikuni tuning manual and a jetting suggestion chart.
Not for the stock carburetor Fits TM40 conversions Only
Perfect for Dirt Bikes with a stock engine using the stock airbox, air filter, and pipes.
Stage 1 Jet Kits are engineered to improve throttle response and deliver approximately 5% more horsepower than stock.
These kits are fully adjustable to allow the use of well-designed aftermarket pipes and stock replacement air filters, like K&N.
Dynojet Jet Kits increase power and smoothness throughout the entire rev range, while maintaining optimum fuel economy. Each Dynojet Jet Kit includes comprehensive instructions which show step-by-step installation and testing procedures to ensure a perfect setup every time.
Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets.
Our own jet kit for the DR650 stock Mikuni BST40 carburetor. Includes the extended fuel mixture screw and stainless steel Allen screws for the float bowl and top cap. Also included are new Viton o-rings for the float. Comes with easy to understand detailed instructions and diagrams. Includes a template for modifying the air box.
The jet kit for riders who want their bike to run well but do not want to modify the air box.
The Ti ProKit w/Titanium needle adds more power and better throttle response. Easy to install and tune - no slide drilling. No air box modification.
Includes: a main jet selection, adjustable titanium needle, clips (with extras), pilot jet, instructions.
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets and adjustable needle.
The FMF Power-Up jet kit makes jetting your carb simple. They teamed up with DynoJet to produce a kit that offers you a selection of jets and/or needles to get maximum horsepower out of your KLR. The easy to use instructions have diagrams and step-by-step procedures to help you get your jetting where it needs to be, no matter what elevation you ride at. No more driving back and forth to the dealer with a handful of jets and needles with a million questions running around in your head about where to start or turn next.
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
Buy both and save! Includes the Boyesen QuickShot 3 and Sunline Mixture Screw
This kit includes 2 needles that have been developed by JD Jetting and manufactured for them to their exacting specifications. These two needles allow a wide range of tuning possibilities and provide correct fuel delivery at any throttle position.
4 Allen type screws for the float bowl are also enclosed should you strip out the stock screws during your tuning process. Complete instructions with photos, jetting suggestions for different set-ups and situations, 4 Main Jets, a new Pilot Jet, and a drill bit complete the package.
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
Kit includes:
Not for the stock carburetor Fits FCR-MX conversions Only.
Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets.
Geared for the do-it-yourselfer that already has a TM40 or HS40. This kit supplies everything you need to convert it for use on your bike.
Kit includes intake and air boot adapters, throttle cables, choke knob, accelerator pump nozzle, a wide selection of main and pilot jets plus a TM40 tuning manual.
This kit includes 2 Needles that have been developed by JD Jetting and manufactured for them to their exacting specifications. These two needles allow a wide range of tuning possibilities and provide correct fuel delivery at any throttle position.
4 allen type screws for the float bowl are also enclosed should you strip out the stock screws during your tuning process. Complete instructions with photos, jetting suggestions for different set-ups and situations, 5 Main Jets and a drill bit complete the package.
Dynojet Jet Kits increase power and smoothness throughout the entire rev range, while maintaining optimum fuel economy. Each Dynojet Jet Kit includes comprehensive instructions which show step-by-step installation and testing procedures to ensure a perfect setup every time.
For mildly tuned machines using the stock airbox, with stock or K&N filter. May also be used with a good aftermarket exhaust system
Stage 1 Kit Intended for motorcycles with a stock engine using the stock airbox, air filter and stock pipe Fully adjustable to allow the use of well-designed aftermarket pipes and stock replacement air filters like K&N Designed to improve throttle response and driveability In most cases power increases of approximately 5% throughout the entire power range can be achieved
Dynojet Jet Kits increase power and smoothness throughout the entire rev range, while maintaining optimum fuel economy. Each Dynojet Jet Kit includes comprehensive instructions which show step-by-step installation and testing procedures to ensure a perfect setup every time.
This cover acts as an "adjustable leak jet" to fine tune the accelerator pump squirt.
Eliminates "4-stroke bog" when used with correct jetting. Allows the use of correct carburetor settings to optimize performance, starting and reliability. Improved low-end performance with much better throttle response. Investment cast and finished to precise tolerances with internal high volume vertical check valve. Fits all motorcycles and ATVs using a Keihin FCR carburetor Easy installation instructions (including online video) and template.
Not for the stock DR650 carburetor Fits FCR-MX conversions Only.
Genuine KEIHIN replacement parts for your FCR41 pumper carb. Ensure your beast is getting fed when it needs it!
Not for the stock carburetor. Fits FCR41 conversions only.
Driven Engine Block-off Plates will stop the annoying and possibly damaging backfires from occurring while allowing you to remove a few pounds in associated valves and hoses from your bike. On late model EFI bikes with O2 sensors, ESPECIALLY when using Dynojet's Power Commander 6 with the Autotune feature, the air injection system MUST be blocked as it will introduce additional oxygen into the system which will skew your O2 sensor's values and make it impossible to get a correct tune.
