PREORDER - 1972-1977 Porsche 911 915 Stage 1 Ultra Lightweight Race Flywheel and Clutch Package - Torsion Spring Hub (PKG 915 225 6BRSR KAA1 MS PMS / PKG 9156 ULW 1SHR PMS)

PREORDER - ALUMINUM / ALUMINUM PRESSURE PLATE IN PRODUCTION - ETA TBD Flywheel And Clutch Package For Ultra Lightweight Racing (Stage 1) With Less Rotational Inertia - The Engine Is Able To Respond To Throttle Inputs Quicker.  Heel-Toe Downshifting Is Made Easier With Less Throttle Required To Match Engine Speed.  Less Moment Of Inertia Helps The Vehicle Accelerate More Quickly And Decreases Time Required To Shift As Engine Speed Drops Faster. 6 Bolt 225mm RSR Billet Flywheel & 915 Sachs Performance Metallic Puck Spring Hub Race Clutch Package For 1972-1977 911 6 Bolt Crankshaft Engines Paired With 1972-1986 Porsche 915 Transaxles - For High Performance Race Use - Patrick Motorsports USA Exclusive / Sachs Performance - Sold As A Package - 1 Per Car - Approximate Assembly Weight: 22.24 lbs (compared to O.E. 6 Bolt 915 Assembly Weight 26.99 lbs) NOTE: Maximum Engine Torque Capacity = 675 (NM) / 500 (FT/LB) -  This Package Includes: + Patrick Motorsports Exclusive 6 Bolt 225mm Bille