Street Series Internally Balanced Black Steel Finish
Street Series - P/S, Air and Alternator Pully's Internally Balanced Black Steel Finish w/ Anodized Aluminum Pulley
Comp Series - 40% Underdriven Alt. Pulley Internally Balanced Anodized Aluminum Finish
Comp Series - 30% Underdriven Alt. Pulley Internally Balanced Anodized Aluminum Finish