Martin Sprocket & Gear 50BB25H-3 4 Idle Sprocket is an idle sprocket from the Martin Sprocket & Gear line designed to guide and support a chain in a gear-and-chain drive system. Installed in the chain path, idle sprockets help maintain proper alignment and reduce chain derailment by keeping the chain track smooth as it moves. The part number 50BB25H-3 4 uniquely identifies this specific idle sprocket for ordering and replacement within compatible Martin Sprocket & Gear assemblies.
