Pitbike 8mm Chain Roller Pulley Tensioner Spring 110cc 125cc 140cc Dirt Bike Pit

Suitable for 420 and 428 chain sizes, the perfect spare parts A valuable addition to any pit bike to keep the chain aligned and tensioned The roller has 8mm bearings. Used on some petrol / gas motorized bicycle engines Fits many of the big Chinese import makes including Stomp Demon X, WPB, Orion, M2R, Lucky MX, Thumpstar, Explorer, Braaap, Atomic, Pitpro, Pitster Pro, DHZ, SSR, Piranha and many more A Petrolscooter manufactured and branded part