BMW M50 / M52 / S50 / S52 Stroker Kit by 5150 AutoSport Bigger displacement, more torque and more power; Our 5150 AutoSport Stroker Kits are specifically designed for BMW M5X / S5X inline-6 Engines. Utilizing CP-Carrillo Pro-Xtreme Forged Pistons and Connecting Rods, as well as the 5150 4340 Billet Steel Crankshaft, this kit has stood up to the tests and trials of high horsepower application time and time again. Featured in our very own 5150 Bully E36, we only sell you the products that we have used and tested ourselves. Benefits of Stroking an Engine: - Higher displacement offers greater power output and torque from increased cylinder volume and improved air-fuel mixture combustion - Longer crankshaft stroke increases connecting rod leverage for increased torque output at lower RPMs - Improved throttle response- Increased horsepower Teams have applied this kit in Hill Climb, Road Racing, Endurance Racing, Rally, Time Attack, Drag Racing, Roll Racing, Drifting, and Street applications, all with powerful results. Kit Contents: - 5150 AutoSport 4340 Billet Steel Crankshaft - Professionally turned, polished, and coated with anti-wear coating - Fully balanced- Manley Performance Connecting Rods (Rated for 1,000HP, 8500 RPM) - Optional Upgrade to CP-Carrillo Pro-Xtreme Forged Connecting Rods (Rated for 2,000HP, 9500 RPM)- CP-Carrillo Pro-Xtreme Forged Pistons- CP-Carrillo Piston Wrist Pins - CP-Carrillo Piston Rings - CP-Carrillo Piston Wire Locks Don't see the piston combination you're looking for? Have more questions? Contact our engine build advisors to discuss your next build. BMW M50 Applications: 3 Series 1990-1995 E36 320i / 325i / 325is1994-1996 E35/E36 318ti 5 Series 1990-1996 E34 520i / 525i1991-1996 E34 Touring 520i / 525i Z Series 1995 E36/E37 Z3 2.0i / 2.5i BMW M52 Applications: 3 Series 1994-1999 E36 320i / 323i / 323is / 328i / 328is1997-2000 E35/E36 318ti / 323ti 5 Series 1996-1998 E39 520i / 523i / 528i 7 Series 1996-1998 E38 728i / 728iL Z Series 1996-1999 E36/E37/E38 Z3 2.0i / 2.2i / 2.8i BMW S50 US Applications: 3 Series 1994-1995 E36 M3 BMW S52 Applications: 3 Series 1996-1999 E36 M3 Z Series 1998-2000 E36/E37/E38 Z3M