740-5M-15 belt now supercedes to: 740-5M-16 belt, Chuweng Raser Gas scooter tire drive belt, THS, ROCKVILLE, Libra, Salorr, Chuweng, Star II, THX PRO & others. Can be used on Cobra & The Rock & Dynamite if factory belt gearing is kept and ScootR longer Swingarms are installed. This is factory belt for R1, R4 & R5/Raser FX