EFF-cientt Transmission belt go kart Trailmaster MID XRX XRS Hammerhead 80T 9.100.018-725 Replaces OEM 9.110.018- 9.100.018-725 Brand new belt fits Hammerhead 80T TrailMaster Mid XRX Mud Head Go-Karts. Mouse over image to zoom Details about Arrival within 1-2 days (Sold by Eff-cientt and Fulfilled by Amazon) If not suitable, please contact the amazon customer service return