Spring time is in full swing here at ProCycle. With these busy days please be sure to let us know if your order is time sensitive. We try to do as much as we can to accommodate your upcoming trip.
Repair leaking carburetor or worn out float needle assembly.
- Kit contains all necessary gaskets, O-rings, float valve and jets
- Supplied by the same supplier the OEMs use
- Complete kit to rebuild OEM carburetor
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.
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.
A ProCycle exclusive. This is our favorite air filter for the DR650. Made just for us by the folks at DT1.
- Unique triple stage foam filter designed for the most extreme conditions
- Increased protection against silt, water, and sand
- Allows for extended filter service intervals
- Neoprene base gives superior sealing to air box
- Includes resealable bag for easy oiling and storage
NoToil cleaner NOT recommended with this filter. May cause delamination.
For mildly tuned machines using the stock airbox, with stock or K&N filter. May also be used with a good aftermarket exhaust system
- Provides a simple and affordable solution to carburetor tuning problems.
- Allows you to tune your bike for increased power and smoothness while retaining fuel economy.
- Includes a guide booklet on how to install and use your jet kit to it's full potential.
- For a top quality installation we recommend adding an extended fuel screw and a set of replacement carb screws.
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
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.
Dual stage foam: 2 different pore sizes create more trapping area for even the smallest dust particles.
Flame laminated foam: Both "Stages" are not glued but heat sealed to provide maximum air flow.
Light color foam makes it easier to see where the filter oil has covered and where it has not.
K&N Replacement filters are designed for all street legal and off road motorcycles and ATVs to O.E.M. (manufacturers) size specifications and fit into your original OEM air box without modification of jet changes. Due to design and unique high flow characteristics, K&N filters allow engines to breathe free and produce optimum horsepower. Under most conditions K&N air filters never need to be replaced. With proper cleaning and care, K&N air filters will last the life of your engine.
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.
- Increased air flow over the stock air filter
- Designed to increase horsepower and throttle response
- Designed to fit inside the factory air box
- Larger surface area over foam filters which offers longer service intervals in dusty conditions
- Four layers of premium cotton gauze provides outstanding filtration
- Washable & re-usable, never wears out
- One filter will last the lifetime of your bike
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 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.
Dual stage foam: 2 different pore sizes create more trapping area for even the smallest dust particles. Flame laminated foam: Both "Stages" are not glued but heat sealed to provide maximum air flow. Light color foam makes it easier to see where the filter oil has covered and where it has not.
- Increased air flow over the stock air filter.
- Designed to increase horsepower and throttle response.
- Easily fits inside the factory air box.
- Larger surface area over foam filters which offers longer service intervals in dusty conditions.
- Four layers of premium cotton gauze provides outstanding filtration.
- Washable & re-usable, never wears out.
- One filter will last the lifetime of your bike.
Boyesen Pro Series dual-stage reeds combine a carbon-fiber top reed with a fiberglass bottom reed for unrivaled performance. The Pro Series Reeds are more responsive than our traditional Power Reeds. The carbon-fiber top reed has excellent response characteristics that provides even quicker acceleration, stronger throttle response, and more over-rev than our standard Power Reeds. The fiberglass bottom reed provides stability and longer reed life.
- Increased air flow over the stock air filter
- Designed to increase horsepower and throttle response
- Easily fits inside the factory air box
- Four layers of premium cotton gauze provides outstanding filtration
- Washable & re-usable, never wears out
- One filter will last the lifetime of your bike
- Designed to fit in the factory air box exactly like original filter
- The best selling replacement air filter for competition motorcycles and ATVs
- Unique two stage design allows for easy and complete cleaning
- Dual layer of foam, can be serviced separately
- Thin Ultra Seal base is virtually impossible to tear and has a built-in "Grease Groove"
- Unique triple stage foam filter designed for the most extreme conditions
- Eliminates the need for power robbing dust covers and outerwear covers
- Increased protection against silt, water, and sand
- Allows for extended filter service intervals
- Can be cleaned, re-oiled, and re-used like a 2 stage filter
- Used by factory off road teams around the world
FunnelWeb ProLine Filter Highlights:
- Optimum air flow for increased riding time
- Improved engine protection
- Extended filter change intervals
- Simple to install, clean and re-oil
- Easy fitment
Like all FunnelWeb filters, the ProLine Filter features profile cut, single layer, single density foam that doubles the external surface area of the filter without increasing the original filter size. The ProLine Filter traps dirt, dust, sand and mud over a larger area on its outer surface, ensuring optimal air flow is maintained for maximized engine performance and reliability.
The single layer, single density polyurethane foam has the added advantage of being easy to clean and the ability to maintain its original shape after numerous washes. Overall, compared with conventional foam filters, FunnelWeb offers more protection from dirt ingestion, has longer service intervals and maintains high airflow rates when dirty.
Allows your bike to breathe much better giving you better response and performance.
- Breather Filter
- ProCycle Jet Kit which includes jets, needle, extended fuel screw, drill bits and Allen bolts to replace phillips (JIS) head bowl screws and detailed installation instructions
- Choose Twin Air, DT1, or K&N filter with ProCycle filter wrap
- OPTION - Twin Air breather filter (replaces standard breather filter)
- Unique triple stage foam filter designed for the most extreme conditions
- Increased protection against silt, water, and sand
- Allows for extended filter service intervals
- Can be cleaned, re-oiled, and re-used like a 2-stage filter
- Neoprene base gives superior sealing to airbox
- Includes resealable bag for easy oiling and storage
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.
Two layers of foam, catch and retain nearly any contamination you will encounter.
The adhesive that holds the two materials together withstands repeated cleanings even with harsh solvents or gasoline.
These filters are slightly smaller than stock to increase air space around the filter, improving circulation and air flow. A thick, flat breathable foam gasket forms a grease free sealing ring that ensures maximum contact with your airbox.
This kit includes 2 fire resistant pre-oiled air filters and 2 plastic filter frames.
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.
Twin Air's high quality materials and superior construction deliver unbeatable performance and protection. The hands-down choice of more World and National Champions than all other filters combined.
Twin Air's fused layers of open-pore foam and fine inner foam trap even the smallest particles-without restricting airflow.
- These bands are the visible part of two fiber reinforced nylon injection moldings which form the structure on which the unique Tri-Foam filter system is bonded.
- The two outer layers of foam provide optimum filtration and load-up capacity while the inner layer is made of special self extinguishing filter foam.
- Together, they give the best combination for air flow, engine protection and safety.
This is ONLY a replacement filter for the ProCycle ITG kit and is not a direct swap for OEM.
Kit includes:
- Main jets: 145, 150, 155 and 160
- Pilot jets: 38, 40 and 42
- Merge Racing AP spring
- JD Fuel screw
- #35 leak jet
- EMP and EMR needles
Everything you need to dial in your FCR/DR650 conversion. Enough jetting to cover most modifications or altitudes.
Not for the stock carburetor Fits FCR-MX conversions Only
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.
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.
Here's a UNI dual layer foam air filter element to fit our TW200s. Needs to be treated with air filter oil like any other foam filter.
Here is a high quality aftermarket air filter made by HiFlo. Until now, only European TW owners had access to this high quality product. We have these in stock ready to ship! Be sure to treat this air filter with a high quality air filter oil, such as the No-Toil Oil shown below.
- Designed to fit in the factory air box exactly like original filter
- The best selling replacement air filter for competition motorcycles and ATVs
- Unique two stage design allows for easy and complete cleaning
- Dual layer of foam, can be serviced separately
- Thin Ultra Seal base is virtually impossible to tear and has a built-in "Grease Groove"
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
- Provides a simple and affordable solution to carburetor tuning problems.
- Allows you to tune your bike for increased power and smoothness while retaining fuel economy.
- Includes a guide on how to install and use your jet kit to it's full potential.
- For a top quality installation we recommend adding an extended fuel screw and a set of replacement carb screws.
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.
- Reduced size from PCIII USB (less than half the size of PCIII)
- USB powered from computer (9V adapter is no longer needed for programming)
- Two-position map-switching function built in (map switch not included)
- Gear/speed input (allows for map adjustment based on gear and speed)
- Analog input (allows user to install any 0-5V sensor and build an adjustment table based on its input such as boost or temperature)
- With gear-position input connected, the PCV is capable of allowing each cylinder to be mapped individually and for each gear
- Unit has a -100/+250% fuel change range (up from -100/+100%), which allows more adjustment
- 10 throttle position columns (up from nine on PCIII USB)
- Enhanced "accel pump" utility (increased adjustment and ranges)
- Made in the U.S.A.
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 02 sensors, ESPECIALLY when using Dynojet's Power Commander V with the Autotune feature, the air injection system MUST be blocked as it will introduce additional oxygen into the system which will skew your 02 sensor's values and make it impossible to get a correct tune.
- Fits directly into OEM airbox with application specific Sealing Bead to ensure a precise fit
- Fuel-management modifications are not required for increased performance
- Pleated media provides a large filtration area offering long service intervals
- Designed to provide increased performance
- Made in the U.S.A.
- Increased air flow over the stock air filter
- Designed to increase horsepower and throttle response
- Easily fits inside the factory air box
- Larger surface area over foam filters which offers longer service intervals in dusty conditions
- Four layers of premium cotton gauze provides outstanding filtration
- Washable & re-usable, never wears out
- One filter will last the lifetime of your bike
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.
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.
- Increased air flow over the stock air filter
- Designed to increase horsepower and throttle response
- Easily fits inside the factory air box
- Larger surface area over foam filters which offers longer service intervals in dusty conditions
- Four layers of premium cotton gauze provides outstanding filtration
- Washable & re-usable, never wears out
- One filter will last the lifetime of your bike
If you are converting a Keihin FCR-MX 39 to fit on your DR, you need to start here. This 6061 T6 aluminum adapter bonds to the airbox side of the carb so it will easily fit the DR.
Not for the stock carburetor Fits FCR-MX conversions only.
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.
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
- Provides a simple and affordable solution to carburetor tuning problems.
- Allows you to tune your bike for increased power and smoothness while retaining fuel economy.
- Includes a guide booklet on how to install and use your jet kit to its full potential.
Twin Air's patented design, high quality materials and superior construction deliver unbeatable performance and protection - and make Twin Air Filters the hands-down choice of more World and National Champions than all other filters combined.
An air filter is your engine's only protection against the elements, and your stock filter isn't up to the task. Replace it with a Twin Air - the #1 filter system proven on motocross tracks around the world.
Twin Air's fused layers of open-pore foam and fine inner foam trap even the smallest particles-without restricting airflow.
The plastic fitting that secures the stock choke cable to the carburetor is delicate and easily broken. A broken fitting can cause hard to solve idling and running problems.
CNC machined from billet aluminum and anodized black or blue. If you want to retain your handlebar mounted choke this may be the solution.
These no longer fit the new version of the ProCycle Remote Choke Cable. Will not work with the long or short reach choke knobs.
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
- Increased air flow over the stock air filter
- Designed to increase horsepower and throttle response
- Designed to fit inside the factory air box
- Larger surface area over foam filters which offers longer service intervals in dusty conditions
- Four layers of premium cotton gauze provides outstanding filtration
- Washable & re-usable, never wears out
- One filter will last the lifetime of your bike
Want an amazing increase in throttle response? More power over a much wider range? The Keihin 41mm, FCR style carburetor does all of that plus runs smoother at lower RPMs and pulls taller gearing with ease.
This kit is available with a choke circuit and a version without a choke circuit.
Both kits include everything needed for a simple bolt on installation - a genuine Keihin FCR41 pre-jetted flat slide carburetor, Motion Pro push/pull throttle cables and airbox adapter. Bolts right up to your OEM airbox fitting and intake manifold.
You cannot add a choke knob to the non-choke version!