SUPERTECH forged pistons for Nissan RB25. Bore 86.5 mm, compression ratio 9.0:1, dome / dish volume +15.5 cm³, piston pin diameter 21 mm, compression...
Wiseco forged pistons for Nissan RB25DET. Bore 86.25 mm, compression ratio 8.4:1, dome / dish volume +14 cm³, piston pin diameter 21 mm, compression...