Umatek Powerbloc 80 Driven Pulley | Polaris 550 (1988-2013), 650 (1988-995) Protection The Cobra eliminates 95% of

The Cobra eliminates 95% of darting on snowmobiles

40 mm HD speakers – rich audio inside helmet ear-cups

D3O shock-absorbing tongue and insole

Removable Hydradry™ 3-piece moisture wicking liner

And it’s very quiet when closed

Umatek Powerbloc 80 Driven Pulley | Polaris 550 (1988-2013), 650 (1988-995) Protection The Cobra eliminates 95% ofUmatek Powerbloc 80 Driven Pulley Polaris 550 (1988 2013), 650 (1988 995) 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.