Fuel and Intake

Buy both and save! Includes the Boyesen QuickShot 3 and Sunline Mixture Screw

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.

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.

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.

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.

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.

Unlock your KLX300's hidden power potential with this proven airbox modification using the KDX200 high flow snorkel. This popular performance upgrade replaces your bike's restrictive stock air intake snorkel to dramatically improve airflow and breathing, helping your KLX300 produce more horsepower and torque. 

Easy to install and widely recommended by the KLX300 community, this airbox mod is an essential first step for riders looking to increase power, improve throttle response, and enhance overall engine performance. 

Perfect for pairing with exhaust upgrades and ECU tuning, the KDX220 snorkel delivers noticeable gains while maintaining reliable filtration - making it a must-have modification for any KLX300 owner seeking affordable horsepower improvements and better engine breathing. This famous airbox mod works on the KLX250 as well.

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 carb. Easy installation instructions (including online video) and template.

• Includes all necessary parts to rebuild the OEM fuel pump module
• Restore lost performance or non-functioning fuel pump with this economical solution
• Kit comes ready for plug-and-play installation