Thump Racing 05-2010 Mustang GT Billet Aluminum Saleen Extension Arm (63mm Idler)

The Heavy Duty CNC Machined Saleen Extension Arm is designed to achieve a better grip around the blower pulley for better performance and to prevent belt slippage. Extension Arm comes complete with double bearing billet aluminum Idler pulley. It must be used in conjunction with the Thump RRR Racing Billet Tensioner P/N PM-1002-76 or PM-1002-90. 

This may be used on either 6 or 8 rib setups.