QuadBoss, QuadBoss Air Cut-Off Valve Kit for Yamaha YFM400 and YFM660R Models Motor City Barrels Why this set stands out:

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

Easy to install with included mounting hardware

providing superior durability and cornering stability at high speeds

Who should consider this set

further adding to the holiday charm

QuadBoss, QuadBoss Air Cut-Off Valve Kit for Yamaha YFM400 and YFM660R Models Motor City Barrels Why this set stands out:The 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