It is more affordable to replace the original carb than clean it. Many original carburetors are of lower quality and should be replaced with these quality carbs to ensure reliable performance.

Boyesen Engineering has now released the NEW QuickStart. Hot engine starting is no longer a problem and is available for ALL Keihin FCR carbureted MX, Offroad and ATV models. The patented performance of the proven QuickShot system, now with adjustable...

Throttle slides vary in design between carburetors. Check all specifications before ordering.

Boyesen Engineering has now introduced the NEW QuickShot 3. This bolt-on performance accelerator pump cover eliminates bog, improves throttle response and offers hassle free leak jet circuit tuning. Currently available for ALL Keihin FCR carbureted MX,...

It is more affordable to replace the original carb than clean it. Many original carburetors are of lower quality and should be replaced with these quality carbs to ensure reliable performance.

Throttle slides vary in design between carburetors. Check all specifications before ordering.