South Bend Clutch Stage 4 Extreme Clutch & Flywheel Kit | B6 S4 · B7 S4 F10 M5 4.4L Turbo V8 [S63] 8T 06A block from flexing

8T 06A block from flexing

and integrate velocity stack to maximize airflow

Integrated Check-Valve

The NEUSPEED P-Flo kit now offers a choice of two filter types: the time proven oiled multi-layer cotton gauze air filter that is washable and reusable or the new dry paper media filter

This hydraulic tensioner has a gas-charged piston that provides tension on the tensioner roller

South Bend Clutch Stage 4 Extreme Clutch & Flywheel Kit | B6 S4 · B7 S4 F10 M5 4.4L Turbo V8 [S63] 8T 06A block from flexingThis is a "build to order" clutch kit intended for cars with HP modifications exceeding the stage 3 parameters. The Race Engineered pressure plate is modified for maximum plate load. The discs are puck design with sprung and un sprung options. Friction material options include Sintered Iron and Graphite Impregnated Ceramic. Engagement characteristics can be abrupt. Hydraulic systems may need enhancing for proper clutch separation. Single mass steel