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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.

• 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

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.

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.

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 provide a simple and affordable solution to carburetor tuning problems
• Kits increase power and smoothness throughout the rev range while maintaining optimum fuel economy

Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets.

• Main Jets: 127.5, 130, 132.5 &135
• Pilot Jets: 42.5 & 45
• 5 Shim washers for raising the needle

Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets and adjustable needle.

• #20 and #22.5 pilot jets
• #107.5 and #110 main jets
• 3 position adjustable needle

Tune your stock carburetor for better power and response, easier starting and quicker warm up. Mikuni main and pilot jets.

• Main Jets: #110 & #112.5
• Pilot Jets: #17.5 & #20

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.

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.

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.

• Stage 1: stock engine/filters, stock/modified pipes; about a 5% power increase
• Stage 2: stock/mild modified engine, stock/modified pipes, stock/modified filters; about an 8% power increase
• Increases power and drivability
• Fully adjustable

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.

• Stage 2: stock/mild modified engine, stock/modified pipes, stock/modified filters; about an 8% power increase
• Increases power and drivability
• Fully adjustable

• 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
• Stage 1: stock engine/filters, stock/modified pipes; about a 5% power increase
• Increases power and driveability
• Fully adjustable

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 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.

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 it's full potential

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.

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 it's full potential.
• For a top quality installation we recommend adding an extended fuel screw and a set of replacement carburetor screws.

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.

• Stage 1: stock engine/filters, stock/modified pipes; about a 5% power increase
• Increases power and drivability
• Fully adjustable

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

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.

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

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.

Kit includes:

• 155 Main Jet
• 40 pilot jet
• #35 leak jet
• EMP needle

Not for the stock carburetor Fits FCR-MX conversions Only.

Raises compression from stock 9.5:1 to 10.5:1 for more power, torque and snappier engine response. The high quality forged piston from JE is almost a full ounce lighter than the stock cast piston. This makes for less vibration and a smoother running motor. Includes rings, pin, clips, and top end gasket set with valve stem seals and metal base gasket. Fits the standard size stock bore.