

Brian in AZ
This kit is great, comes with new CDI box, and repalcement throttle stop screw. Just use vise grips to remove the OEM throttle stop, it has a special head to the screw. Once you start removing it you will understand why it must go, its nearly 4 inches long and the replacement one is under an inch. This kit is the single best thing you can do to your WR450f. Oh yea when you''re done installing, drill out that exhaust baffel or even better get the FMF Q...you wont regret it.
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TRAVIS in UT
Easy to use. Adjuust fuel and timing maps in seconds. Very helpful to fine tune my 2011 YZ450F. Check engine condition by checking sensor functions.Must have tool!!
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Kyle in OR
This kit does exactly what it says it does: allows you to remove the AIS from your bike.
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