Material: forged aluminum Design: Engineered for durability and performance Compatibility: Specifically designed for a range of and Seat models Piston Diameter: 82.5mm STD Pin Diameter: Φ21mm Engine Compatibility: EA888 2.0 TSI engines The EA888 Pistons & Rings 82.5mm STD Set is designed to upgrade your vehicle's engine for improved performance and longevity.Constructed from forged aluminum, these pistons and rings are built to handle the demands of enhanced engine.The 82.5mm piston diameter precise fitment across compatible applications, offering a solution for engine rebuilds or performance tuning. engineering proper function and fit within the engine.The Φ21mm pin diameter is a key specification that should be verified prior to installation to compatibility.The set includes pistons, pins, piston rings, and snap rings, all designed to work together.This configuration allows for direct replacement of components, simplifying the installation process for both professional mechanics and experienced DIY users. This piston and ring set is compatible with engines used in A3, A4, Q5, TT, and various Seat models equipped with the EA888 2.0 TSI engine.It supports engine builds aiming for increased and output, making it suitable for daily driving or performance-oriented applications. This replacement part is independently produced.All brand references are for compatibility demonstration only.