Precision-engineered for serious performance.

The Gemini Components Forged Piston Set is the ultimate upgrade for your BMW N55 engine — designed for enthusiasts and builders who demand strength, durability, and precision under high-boost and high-RPM conditions.

Built using aerospace-grade 2618-T6 forged aluminum, these pistons deliver exceptional thermal resistance and reduced weight. Whether you're building a reliable street monster or a dedicated track car, Gemini pistons are Engineered to Perform — and trusted by professionals.

• Forged 2618 aluminum construction for ultimate strength and reliability

• Bore size: 84.00 mm (standard N55)

• Compression ratio: 10.2:1

• Wrist pin diameter: 22 mm (full-floating pins included)

• Direct OEM replacement for cast N55 pistons

• Thermal-barrier coated crown & low-friction skirt coating

• Compatible with stock or upgraded 144.35 mm rods

•  Designed for high-output applications (900+ HP with supporting mods)