COMPTON, Calif. - According to carburetor specialist Sudco, Keihin FCR carbs are the best options for four-stroke racing machines thanks to their precise metering high flowing, flat slide throttle design and adjustable accelerator pump.
To offer the best performance setup for Honda XR640R/L owners, Sudco has created a Keihin FCR 41mm carb kit built around the proven Honda single.
The Sudco Keihin FCR Kit ($541.80) includes a pre-jetted Keihin FCR41 carb and push/pull throttle cables that work with the XR's stock twist throttle. The carb is ready to bolt up to the bike's stock airbox and intake manifold.
Sudco claims the kits works well in a range of applications, including trail and street riding all the way up to all out racing, on both stock and highly modified engines.