QuadBoss, QuadBoss Air Cut-Off Valve Kit for Yamaha YFM400 and YFM660R Models Motor City Barrels Produced by Dan's wife

Produced by Dan's wife

MPN: 0140-0459

Who should consider this set

Why this set stands out: it isn’t just a decal or sticker job—it’s a tactile

providing superior durability and cornering stability at high speeds

QuadBoss, QuadBoss Air Cut-Off Valve Kit for Yamaha YFM400 and YFM660R Models Motor City Barrels Produced by Dan's wifeThe QuadBoss Air Cut Off Valve Kit is designed to restore optimal performance in Yamaha YFM400 Big Bear and YFM660R Raptor models from 2000 to 2005. Over time, improperly functioning air cut off valves can stick open or closed, leading to poor engine running conditions and popping sounds during deceleration. This comprehensive rebuild kit includes all necessary components such as O rings, diaphragm, spring, and screws to repair the air cut off valve