Nippon Racing RL5 Pistons are heat treated. Pistons are equipped with 4 CRYOGENICALLY Heat Treated 22MM Wrist Pins and Teflon Coated Skirts and 8 Spiro Locks. All Nippon Racing piston sets are weight matched to +/- 1 gram. These are true High Performance racing pistons with a horsepower rating of 500 HP.
This kit is a Full Floating Piston set and can be used with both aftermarket and OEM Rods.
Nippon Racing Pistons are made using 2618 Alloy and Proprietary Centrifugal Spin Casting process as well as a 6 step heat treatment process to insure a piston that is just as hard as a forged piston, but with a much lower expansion rate that forged pistons. Meaning that engines assembled with Nippon Racing Pistons will outperform OEM pistons by 300% and ensure a prolonged end life. This process insures ZERO Internal defects from the factory and are guaranteed to outperform any other piston manufacturers cast piston currently on the market. Nippon Racing offers a limted lifetime guarantee against manufacturer defects on all pistons. Nippon Racing LTD has been manufacturing aluminum components in Japan for over 40 years. All Nippon Racing LTD Pistons and Products are made in Japan.
*Note 87.5mm currently available for Pre-Order, Ship Febuary 2025*
**Rings may be substituted for GNH or Hastings depending on availability
