Umatek Powerbloc 80 Driven Pulley | Yamaha SX, VMAX 500 (1994-2001), VMAX 600 (1994-) Tank Top The Closure System consists of

The Closure System consists of 4 light alloy buckles for easy

Quick attach/detach mounting base (which is interchangeable with Kolpin Rhino Grip XL #21510)

All this adjustability is world class

Easy assembly

Thermoformed small shoulders with interchangeable aluminum plates

Umatek Powerbloc 80 Driven Pulley | Yamaha SX, VMAX 500 (1994-2001), VMAX 600 (1994-) Tank Top The Closure System consists ofUmatek 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.