GY6 engine belt, scooter parts, scooter engine belt 1) model:669,743,729,788,842,835 2) ... engine belt, scooter parts, scooter engine belt1) model:669,743,729,788,842,8352) pass 200 hours test3) CR or EPDM,motorcycle belt Characteristics: ... 1. High flexing capability2. Exact running performance3. Very long service life4. EPDM rubber and Kevlar cord available 5. ATV belt ...