Umatek Powerbloc 80 Driven Pulley | Yamaha Sidewinder STX GT Vent Kits & Prefilters Whether it’s a trip to

Whether it’s a trip to the track or a trek across the globe

Extremely lightweight TCT-Ultra™ Composite shell provides superior strength and impact dispersal properties

The top of the line

They are designed so riders can cover infinite miles in total comfort with only the road ahead to focus on

Umatek Powerbloc 80 Driven Pulley | Yamaha Sidewinder STX GT Vent Kits & Prefilters Whether it’s a trip toUmatek Powerbloc 80 Driven Pulley Yamaha Sidewinder STX GT The Powerbloc 80 is the latest driver pulley designed by CVTech. This pulley as been developed to offer an alternative to snowmobilers who want maximum performance and are tired of wasting time and money on maintenance of their original pulley.