The original differential carrier bushes on BMW’s F87 M2, F87 M2C/M2CS, F80 M3 and F82/F83 M4 models are a known point of failure especially when running increased horsepower. Powerflex developed this polyurethane replacement, available in either standard Powerflex material or harder ‘Black Series’ material, intended for track use. This minimises differential deflection, delivering more consistent power delivery and response while offering compliance for road and track comfort.

Part number 21 on diagram. Priced per vehicle set of four. Covered under Powerflex’s lifetime warranty.