NEW 2005-2008 Roush Supercharger Pulley
BBR S/C Pulley replaces your factory 2.93 pulley with our 2.57 pulley. This will increase your boost level from stock 5.5-6 psi to a new 7-9 psi.
Our Pulley is made highest Quality Billet Aluminum. You will notice a huge increase in low to mid range HP & TQ. We picked up 45 HP @ 4500 rpm
Note: Tuning is required
Also recommend is our 90mm Billet Idler pulley; this will help eliminate any belt slipage issues you may find with a smaller S/C pulley
***FYI: This pulley will NOT fit the 2009 Roush Supercharger***