BMW S68 4.8L Stroker Kit | Up to 2000HP

S68 4.8L Stroker Kit – BMW 4.4L Twin Turbo V8

Turn your BMW S68 4.4L V8 into a torque-heavy 4.8L powerhouse.

This 4.8L stroker kit increases displacement by ~8%, delivering stronger midrange torque, improved turbo efficiency, and massive horsepower potential. Precision-machined from 4340 billet steel and paired with CP-Carrillo forged pistons, this kit is built for serious high-boost performance.

Supports up to 2,000 HP with proper tuning and supporting modifications.

Key Specifications

Displacement

• Stock: 4.4L (4395cc)

• Stroker: 4.8L (~4765cc)

• 94mm stroke crank (OEM ~89mm)

Crankshaft

• 4340 billet steel

• Fully CNC-machined

• Shot-peened & nitrided

• Micropolished journals

• Dynamically balanced (within 1g)

Pistons

• CP-Carrillo forged aluminum

• 89mm bore (no sleeves required)

• 10.5:1 compression (boost & E85 compatible)

• DLC-coated wrist pins & performance ring set included

Rod Options

• Manley H-Tuff – rated 1,000 HP

• CP-Carrillo Pro-Xtreme – rated 2,000 HP

Ideal For

• High-boost builds

• E85 / ethanol setups

• Race-fuel applications

• 1,000–2,000+ HP builds

What’s Included

• 1 × 4340 Billet 94mm Stroker Crankshaft

• 8 × CP-Carrillo Forged Pistons (89mm, 10.5:1)

• 8 × Connecting Rods (choice of Manley or CP-Carrillo)

Bearings, fasteners, gaskets, and oiling upgrades sold separately for full customization.