Cometic Top End Gasket Kit for Nissan SR20DE/SR20DET 88-93 S13 87.5mm .045" MLS PRO2052T

Audi/VW 1.8L 20v Turbo pistons are developed for moderate to high level builds, primarily for street or club race cars that want to develop their engine for high mileage and/or street use. Designed by ZRP engineers and manufactured in Germany from high-silicon, low-expansion 4032 (T6) alloy. This allows the engine builder to use a smaller piston to cylinder clearance, resulting in a better seal. This minimizes cold start knocking noise, common in engines using forged pistons, providing quiet operation and low oil consumption. We have chosen a full round skirt design with a reinforced lower band, with oversized and deeper valve pockets to allow for the use of high-lift camshaft profiles. They have offset pins for quiet operation and the piston pins are made of 9310 alloy. Other features include anti-detonation grooves to protect the top rings, a gas pressure accumulator groove for better ring sealing and vibration relief. Premium Japanese quality 1.00mm x 1.20mm x 2.80mm ring package included. Product Features and Design Anti-detonation grooves for extended life and performance Gas pressure accumulator groove in the second ring land for extended life. Horizontal pin bore grooves designed to allow oil to enter between the piston pin and the pin bore area. CNC precision machined ring grooves High silicon/low expansion 4032-T6 alloy Polished pin bores Clip cuts on the intake side edge Full round skirt design with reinforced bottom band for high HP/Boost applications Valve pockets designed to allow for oversized valves and high lift camshafts Pistons designed to optimize compression for extended engine life and increased horsepower potential Optional coatings offered on demand "Blast Off Bronze" thermal barrier coating Molybdenum side skirt and undercrown "Stealth Black" coating