Polaris ATV Clutching

The Thunder Shift and Heavy Hitter are the highest quality weight arms ever built!! The best engineering, materials, and production methods were employed in their manufacturing. Fasteners are made from billet stock (no hardware store parts are used). The weight arms and fasteners meet strict weight requirements.Each set of weight arms are perfectly matched to a tenth of a gram.

The Thunder Shift and Heavy Hitter have routinely survived spin tests exceeding the RPM and stress limits of any clutch on the market without a single failure. Our testing as well as tests by leading magazines and tuners prove that where weight is placed has a dramatic effect of performance. TS/HH offer many weight combinations while being easy to tune to perfection. Gain two to five sled lengths. It works!!