Powerflex Dual-Mount Rear Differential Bracket PFR5-4030Supplied complete with M14 bolt, thread locker and Powerflex keyring With the newerF8xM2 M3 M4s making big power and having superb chassis straight from the showroom, it's no wonder they're often found at the most serious of track days or at tuning shops across the globe. Unfortunately, the power that makes these cars so fun to drive eventually has an impact on the vehicle components, most notably the rear differential bushes. Despite having the