TwinShot CV40 adj fuel control Polished

The combined benefits incorperated into the Boyesen TwinShot kit creates a synergistic effect that will make the stock Keihin CV carburetor respond as if the bike was fuel injected. The combination of the 5% stiffer activation arm spring and the precision plunger rod ensures that when the throttle is turned, the plunger rod acts upon the diaphragm. This forces fuel into the dual sprayer and squirts a twin shot of fuel directly into the bore of the carburetor. Fits all Keihin CV carburetor equipped Buells from 1998 thru 2004, Evolution Big Twins from 1990 thru 1999, Twin Cam models from 1999 thru 2006 and Sportsters from 1988 thru 2006.