Bell ID=125mmShaft =15mmSplines=19 This clutch fits many GY6-125, GY6-150, Chinese scooters, ATVs and Go-karts. Common applications include: American Landmaster LM202 150cc American Sportworks 6150 Blue Lightning, 6152 Zircon, 7150 Quantam, 7151 Carbide, Carbide 150cc Baja AT150SS, BA150, Dune DN150, Reaction BR150-1 BR150S BMS 150cc scooters CF Moto 150cc E Charm, Glory scooters Coolster 150cc ATV, go-kart, dirt bikes Genuine 125 Buddy, 150 Blur, 150 Buddy International Hammerhead 150cc GT-150IIR, GL-150, GTS-150, KT-150, R150, Rave 150, SS150 Ice Bear Ace PST150-12, Bandit (PMZ150-8), Condor (PMZ150-3S), Eagle PST150-7, Hawk PST150-18, Hawkeye (PMZ150-3C), PMZ150-6-F, PMZ150-6N-F, PMZ150-C-F, PST150-19, Viking PST150-8 Jonway Gator 125cc, 150cc scooters Kazuma 150cc Dingo, Falcon Lacoste ATVs Lance 125cc, 150cc scooters Peace Sports 150cc ATVs, scooters Qingqi 125cc scooters RedStreak 150cc ATVs Roketa 150cc ATVs, go-karts, scooters Schwinn Hope 15