Umatek Powerbloc 80 Driven Pulley | Yamaha SX, VMAX 500 (1994-2001), VMAX 600 (1994-) Tank Top Magnet 10 times stronger than

Magnet 10 times stronger than any electronic device's weight

Thermoformed small shoulders with interchangeable aluminum plates

All this adjustability is world class

Easy assembly

The Closure System consists of 4 light alloy buckles for easy

Umatek Powerbloc 80 Driven Pulley | Yamaha SX, VMAX 500 (1994-2001), VMAX 600 (1994-) Tank Top Magnet 10 times stronger thanUmatek Powerbloc 80 Driven Pulley Yamaha SX, VMAX 500 (1994 2001), VMAX 600 (1994 ) 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.