Search Products

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

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.

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.