The HKS 2.8L High Capacity STEP 2 Piston Upgrade Kit (21004-AN022) is a high-performance engine upgrade developed specifically for the RB26DETT engine found in the Nissan Skyline GT-R R32, R33, and R34. This kit increases displacement from 2.6L to 2.8L, enhancing low-end torque, throttle response, and overall horsepower potential—making it ideal for serious street, time attack, and track builds.

STEP 2 is designed for high-boost, high-RPM applications and includes forged pistons, connecting rods, and a fully counterweighted forged crankshaft with an 86.0mm stroke. The components are engineered to handle extreme power levels while maintaining engine reliability under sustained load.

This kit is ideal for those pairing it with high-output turbo systems and aggressive tuning setups. When combined with HKS valvetrain components and proper engine management, it unlocks the full performance potential of the RB26 platform.

• Engine Compatibility: Nissan RB26DETT (Skyline GT-R R32/R33/R34)
• Displacement: 2.8L (86.0mm stroke)
• Includes: Forged pistons, forged connecting rods, forged full-counter crankshaft
• STEP 2 Design: Optimized for high-power/high-RPM applications
• Recommended for builds exceeding 600+ HP

Note: Professional installation and engine balancing are required. Designed for race and high-performance applications.