30 series drive belts used on aftermarket TAV kits (218352AM), Trailmaster Mid size karts, Trailmaster MB200 mini bikes, and the Hammerhead 80T / Mudhead karts.
Look at the top of your belt for the number 669, 725, or 788.
GoPowerSports aftermarket TAV kit: 725
Trailmaster Mid Size Karts:
Mid XRS: 725
Mid XRX: 725
Mid XRX/R: 788
Blazer200R: 788
Cheetah 8: 699
Trailmaster MB200 Mini Bike:
With bearing style driver: Factory belt is the 669 but we recommend the 788
With bushing style driver: 725
HammerHead 80T and Mudhead Karts: 725