SUPERTECH K20A 86.5MM BORE PISTON

SUPERTECH K20A 86.5MM BORE PISTON Supertech Pistons are manufactured from extruded high silicone, enhanced 4032 alloy (with additional Cu, Ni & Mg) that had low thermal expansion, excellent wear resistance and higher thermal conductivity. Supertech Pistons, with this alloy, have withstood up to 42psi of boost, with alcohol, without any problems. A two or three step forging process yields a fine structural grain which are then submitted to several machining steps in state of the art CNC machines. Several heat treatments provide the piston with high tensile strength and evenly distributed hardness. Contact reduction grooves are standard, and pin bores are honed and reamed for precise fit. Wrist pins are constructed of cold extruded chromemoly steel for high strength and used with wire clip locks. Finally, the pistons receive a ‘phosphate dry lubricant’ coating to protect the rings against ‘micro-welding’ and enhance lubrication on the skirt/cylinder area. ~Rings Are Not Included Application: Engine codes:  K20A2 • K20A3 • K20Z3 • K20Z1 K20 Vehicle Fitment:  RSX Type S 02-06 DC5 RSX Base 02-06 DC5 Civic Si 02-05 EP3 Civic Si 06-11 FA5 (Sedan) Civic Si 06-11 FG2 (Coupe)