HKS 4U-GSE Forged Piston Kit 86.0mm 2.1L

Pistons Only! Image is full Capacity Kit

Capacity Upgrade Kit developed by taking advantage of knowledge and experience acquired through D1 drift and time attack at Tsukuba Circuit.
This kit was designed exclusively for the FA20 engine by meticulous analysis and experiment. HKS delivers this kit with "Made in Japan" quality.
High performance specifications withstanding 550(ps)-50(kgf・m). This kit is for people want to upgrade all the way including the engine internals.

FEATURES

POINT-1: PISTON KIT

• Carefully selected specially forged raw materials used
• Replacing the gasket enables both NA and turbo-charged engine users to use this kit.
• In order to cope with the demands of high outputs, strength analysis and tests have allowed optimisation of compression ratio for flexibility of setup and high boost use.
• Piston crown had 3D design in consideration of stock direct injection system.
• Stock pistons skirts overhang from the block during bottom of travel. Short height pistons have revised potential issues in this area.
• Friction, weight and other design properties to suit the needs of short height pistons.