BMW S54 3.4L / 3.5L Stroker Kit by 5150 AutoSport

Bigger displacement, more torque and more power. Our 5150 Autosport 3.4L / 3.5L Stroker kit is specifically designed for BMW S54 engines.

Our 97mm Stroker Kit is capable of reving up to 9600 RPMs with selecting CP-Carrillo Connecting Rods. Featuring only the highest quality components available, Utilizing CP-Carrillo Pro-Xtreme Forged Pistons and Pro-Xtreme Rods, as well as the 5150 AutoSport 4340 Billet Steel Crankshaft, this kit has stood up to the tests and trials of high horsepower application time and time again. 

Other 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.

Benefits of Stroking an Engine

- With higher displacement, your engine will produce greater power and torque, thanks to increased cylinder volume and improved air-fuel mixture combustion

- The longer stroke in the crankshaft increases the leverage on the connecting rods, resulting in increased torque output at lower RPMs

- Improved throttle response

- Increased horsepower

Kit Contents 

- 5150 Autosport 4340 Billet Steel Crankshaft, 97mm Stroke 
      - Professionally turned, polished, and coated with anti-wear coating
      - Fully balanced
- SP Components Connecting Rods (Rated for 1,000HP, 8500 RPM)
     - Optional Upgrade to Carrillo Pro-Xtreme 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

 Our stroker kit offers varying displacements, ranging from 3300 cc to 3500 cc, depending on the selected bore size:

84.5 mm bore size results in a displacement 3270 cc
85 mm bore size results in a displacement of 3303 cc
85.5 mm bore size yields a displacement of 3342 cc
86 mm bore size provides a displacement of 3381 cc
86.5 mm bore size, the displacement becomes 3420 cc
87 mm results in the maximum displacement of 3460 cc
87.5 mm results in the maximum displacement of 3500 cc

Have more questions? Contact our engine build advisors to discuss your build.