08 YAMAHA GRIZZLY450: EPI Sport Utility Clutch Kit (Oversize Tires - 0-3000') Provides increased acceleration, quicker throttle response, enhanced backshifting, less belt slippage. Designed for stock motor and stock exhaust. Elevation specific choose from 0 - 3,000 feet or 3,000 - 6,000 feet. Note: Sample kit shown, all kits vary by model.