Comp Cams Valve Spring Retainer - Steel 1 in. x 0.640 in.; 16 pieces 2016-audi-r8-esi5063621 3D styling — Modern design

3D styling — Modern design without reshaping or cutting the rear panel

- Treat your Bimmer to premium carbon fiber excellence and experience the attention-commanding presence that only authentic M Performance styling can deliver

They also feature a switchback sequential turn signal and a white spot light on the bottom similar to the factory mirror lights

Aggressive turbo and blowoff valve sounds under load

Porsche 997 Turbo

Comp Cams Valve Spring Retainer - Steel 1 in. x 0.640 in.; 16 pieces 2016-audi-r8-esi5063621 3D styling — Modern design7 Steel Retainers: 1. 055" Spring Diameter Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs. New COMP Cams Steel Retainers are the perfect solution to this problem. COMP engineers used 3D CAD with FEA to design retainers with a modern and advanced contoured top profiling for lower stress, increased lift and a reduction in mass. The retainers are CNC machined to exact tolerances using CAD CAM