ZRP RODS – VW 1.8L TFSI PISTONS SET

The Audi/VW 1.8L TSI pistons are designed for moderate to high-performance tuning, primarily for road racing or club cars looking to develop their engines for high mileage and/or street use. Designed by ZRP engineers and manufactured in Germany from a high-silicon, low-expansion 4032 (T6) alloy. This allows the engine builder to use a closer piston-bore clearance, resulting in better sealing. This minimizes the slapping noise during cold starts, common among engines using forged pistons, ensuring quiet operation and low oil consumption.
We chose a round-skirt design with a lower reinforcing band, with oversized and deeper valve pockets to allow the use of high-lift camshaft profiles. They have offset pins for quiet operation, and the wrist pins are made of 9310 alloy. Other features include anti-knock grooves to protect the first rings, and a gas pressure accumulator groove for improved ring sealing and vibration reduction. A pack of premium Japanese-quality 1.00 mm x 1.20 mm x 2.80 mm rings is included.Product Features and DesignAnti-knock grooves for long life and high performanceGas pressure accumulator groove in the second ring for increased wear resistance.Horizontal slots in the pin hole designed to allow oil to penetrate between the pin and the pin hole area.Precision CNC machined ring groovesHigh-silicon/low-expansion 4032-T6 alloyHoned pin holes3D piston head specifically designed for the needs of TSI combustion chambersRound skirt with lower reinforcement band for high HP/boost applicationsValve pockets designed to accommodate oversized valves and high-revving camshafts liftPistons designed to optimize squish for longer engine life and increased power potentialOptional coatings offered upon requestBlast Off Bronze Thermal Barrier CoatingStealth Black Side-Skirt and Under-Crown Moly CoatingAdditional InformationApplication 1.8L TSI/TFSI, 1.8L TSI/TFSI EA888Bore Size 82.50mm, 83.00mmWeight Gr 324.330Stroke 84.10mmOffset Ratio 9.6:1OEM Offset Ratio 9.6:1OEM Offset Height 29.70mmRod 148.00mmPin Diameter 21.00mmDeck Clearance -0.25CCS Dome +0.36CCRing Set 21-GNH8250, 21-GNH8300Wrist Pin Pn WP034