The capacity upgrade kit brings the best of tuning to the legendary inline 6 and focuses on engine response and the pleasure of driving. 

Features:

• Piston Kit, Piston weight:324g
• Lightweight A2618 aluminum alloy billet piston with high-temperature strength.
• Billet parts with lightweight design.
• Improved structural rigidity with Truss construction.
• 2 layers of molybdenum coating to eliminate friction and improve the initial functionality of the whole system. 
• Short piston pit with the lightweight boss part. 
• Phi of 22 Piston pin with improved torsion rigidity.
• Utilizing a shortened pin allows one to avoid excessive weight while switching from a smaller 21mm one. 

Fits:

• Nissan Skyline GT-R 1989-2002 (RB26DETT)