Umatek Powerbloc 80 Driven Pulley | Yamaha SX, VMAX 500 (1994-2001), VMAX 600 (1994-) Tank Top and a hook and loop

and a hook and loop waist adjuster for an optimized fit

Magnet 10 times stronger than any electronic device's weight

dry seat and dry knee inserts

The Closure System consists of 4 light alloy buckles for easy

All this adjustability is world class

Umatek Powerbloc 80 Driven Pulley | Yamaha SX, VMAX 500 (1994-2001), VMAX 600 (1994-) Tank Top and a hook and loopUmatek 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.