
These are high-performance upgrades designed specifically for the high boost (55psi +) & NOS Application. These pistons are engineered to handle extreme power outputs while…
These are high-performance upgrades designed specifically for the high boost (55psi +) & NOS Application. These pistons are engineered to handle extreme power outputs while offering enhanced durability and efficiency for high-performance and racing applications. Available in stock bore size (82.5mm) with a 9.5:1 compression ratio, they deliver outstanding performance and reliability under the most demanding conditions. Key Features: • Piston Design: • Stock Bore Size : 82.5mm. • Compression Ratio : 9.5:1. • Material : Billet 2618 alloy for high strength and lightweight performance. • Wrist Pins : • Material : H13 super hard alloy. • Dimensions : 23mm diameter, 0.225-inch pin wall thickness. • Coating : DLC (Diamond-Like Carbon) coating for reduced friction, enhanced wear resistance, and better performance under high temperature. • Piston Rings : • Equipped with? Total Seal piston rings , which are thicker than OEM rings for better sealing, improved oil control, and enhanced resistance to higher combustion pressures. • Groove Re-Design : • The piston ring grooves have been re-engineered for better heat management and durability, minimising the risk of ring flutter and improving overall performance. Optimised groove depth ensures reliable sealing while accounting for thermal expansion under high-stress conditions. • Valve Pocket Design : • Custom valve pocket grooves are designed to accommodate? Kelford Cam-A & Cam B camshafts , allowing for better volumetric efficiency and greater valve lift without interference. • Hard Anodizing : Provides a durable oxide layer for increased hardness, wear resistance, and corrosion protection. It also improves heat resistance and lowers friction between the piston and the cylinder wall. • DLC Coated Wrist Pins : DLC coating ensures extremely low friction and enhanced durability, even in high-temperature environments, while reducing wear on the connecting rods. • Performance Rating : Supports builds 1400+ horsepower, ideal for high-performance and racing applications. Technical Specifications : • Finished Bore Size : 82.5mm • Compression Ratio : 9.5:1 • Wrist Pin Diameter : • Wrist Pin Length : These pistons are engineered for compatibility with? Kelford Cam-A & Cam B camshafts , which allow for more valve lift, requiring deeper valve pockets that JDY has specifically designed. Why Choose JDY Pistons? JDY¡¯s Drag Spec Pistons kit are meticulously crafted for enthusiasts and professionals aiming to push the limits of their Audi 2.5TFSI DAZ/DNW engines. ?JDY¡¯s pistons provide the durability, power, and performance needed for success on the street or track.