PFF5-5601G-XX offers additional +0.5° of caster over PFF5-5601 and is a high performance option to PFF5-4601, and aimed at offering greater precision with improved geometry for people wanting the very best from their E46 or Z4. This new part, fitted to the rear of the front wishbone has a hard anodised aluminium outer shell with one of our unique low friction polyurethane centre bushes. The poly/alu combination creates a low friction rotating bush reducing the forces acting on the arm. Lower arm deflection has been decreased by reducing the compliant material within the aluminium shell. Results are less movement in the arm under cornering and braking, improving steering control and feel

Testing during the development of this bush in standard material indicated stiffness gains of 128% compared with the original rubber bush. The Black Series part increases stiffness by 28% over that, to give an 190% increase in stiffness over the original part

Your vehicles bushing size/bushing housing inner diameter will be either 60mm or 66mm – please measure before purchase. Please select material and bushing size when ordering.

Part number 1 on diagram. Sold as a pair – one pair required per vehicle. Covered under Powerflex’s lifetime warranty.