Hiro Performance

You are viewing a brand new set of Greddy Forged Pistons to suit the Nissan SR20DET Engines. The piston kits include pistons, piston rings, piston pins, and everything pictured.

This is what Trust Greddy has to say about the pistons. GREX forged pistons are made from a low silicon type of forged aluminium to reduce high heat expansion and to withstand high RPM’s and high cylinder pressure.

Since piston is one of the most important parts in the engine exchanging combustion energy into the moving moment, the material of the piston must have enough strength against severe fluctuation of temperature and extremely high pressure from the movement. Cast metal, which is used for the stock piston, is suitable for mass production but cannot maintain enough strength when used in those tuned engines that produces over 100hp per cylinder. Instead, forged metal made from alloy aluminium, must be used as the material for those parts that will be used under the severe circumstances beyond stock level.