Genuine Keihin pilot jets provide the best replacement or calibration solution for your Keihin carburetors.  Do not use an imitation, nothing substitutes for OEM quality and Keihin jetting is guaranteed to be the exact size indicated because of high manufacturing tolerances.  The N424-25B-XXX pilot jets fit all Keihin FCR horizontal and FCR down draft carburetors.  Also fits Arctic Cat OEM CVK carburetors and Harley Davidson CV and no-CV type Screamin Eagle carburetors. Some, but not all, of the intended applications include:

• FCR horizontal draft carburetors
• FCR down draft carburetors
• Keihin BD and BH OEM carburetors
• Arctic Cat ATV's with Keihin CVK carburetors
• Harley Davidson with Keihin CV type carburetors, incl. Screamin Eagle
• Kawasaki models with Keihin CVK or FCR carburetors
• Yamaha models with Keihin CVK or FCR carburetors 
• Yamaha YZF600R (95-07)
• Yamaha snowmobiles with Keihin BD carburetors