VMP 2.49" Roush M90 Keyed SC Pulley +3-4psi
VMP new 2.49"" Roushcharged M90 Blower Pulley for 05+ Mustang 4.6L 3V with Roush Blower that uses bolt on style pulley. Use of larger idler pulley recommended.
New smaller design adds approximately 1/2-3/4lb of boost OVER the 2.57 pulley and 10hp/10tq, no tuning or other changes required.
Adds 1-2psi more boost than the aftermarket pulley from Roush Performance.
Tuning and complete packages available in the Roush Mods Section.