Wossner Civic Type-R K20C1 Turbo Forged Piston Kit

Wossner Civic Type-R K20C1 Turbo Forged Piston Kit

The Wossner Civic Type-R K20C1 Forged Piston Kit is the ultimate internal upgrade for the modern generation of Honda turbocharging. Designed specifically for the K20C1 engine found in the FK2, FK8, and the latest FL5 Type-R, these pistons are built to handle the extreme cylinder pressures and heat generated by high-output direct-injection turbo engines. By maintaining a 9.8:1 compression ratio, Wossner provides a robust foundation that supports significant increases in boost pressure while maintaining the engine's factory response and efficiency.

Crafted in Germany from premium 4032-T6 forged aluminium alloy, these pistons offer superior structural integrity compared to factory cast units. The 4032 alloy is specifically chosen for its high silicon content, which results in low thermal expansion—allowing for tighter clearances and quieter operation. Each piston features Wossner’s signature Moly-based skirt coating to minimise friction and mirror-polished crowns to prevent carbon buildup and pre-ignition. This kit is essential for any Type-R owner looking to exceed the 400bhp mark reliably.

Key Performance Features

• Turbo-Ready 9.8:1 Compression: Designed to maintain factory-like response while providing the strength needed for high-boost tuning.

• 4032-T6 Forged Aluminium: Offers incredible strength-to-weight ratios and low expansion for tighter, quieter engine tolerances.

• Advanced Moly Skirt Coating: A permanent dry-film lubricant that reduces parasitic drag and protects cylinder walls under high load.

• Mirror-Polished Crowns: Hand-finished to reflect heat and eliminate hot spots, significantly reducing the risk of detonation.

• Direct-Injection Compatible: Specifically engineered crown profile to optimise the fuel spray pattern and combustion efficiency of the K20C1.

Technical Specifications

Why Choose Wossner?

Wossner is globally renowned for its pioneering work in motorsport forging technology, drawing on decades of experience in Formula 1 and World Rally Championship engineering. By controlling the entire manufacturing process—from the initial forging in their own facility to the final precision machining—Wossner ensures a level of quality and consistency that mass-produced alternatives cannot match. When you choose Wossner for your Honda K20C1 engine, you are choosing a product designed to withstand the brutal stresses of competition while maintaining the refined operational noise levels required for fast-road use