JE Pistons Audi TT RS 2.5 TFSI 5 Cyl Ultra Series 82.5mm Bore Piston Kit (Single) fits_1964 1969`Pontiac`Tempest`Safari~1971 1974`Pontiac`Ventura`Base~1973 1974`Pontiac`Ventura`Custom~1974`Pontiac`Ventura`GTO 1964 1968 Mercury Montclair Base 1960 1972 1964 1968 Mercury Montclair Base 1960 1972 Mercury Monterey Base 1962 1963 BorgWarner Turbocharger S300SV111 therefore reducing piston crown temperatures and improving exhaust gas scavengingHigh Strength Wrist Pins: Premium thick wall wrist pins are manufactured by Trend Performance in the USA and are designed for the demands of high performance power adder buildsLateral Gas Ports: Help maintain power producing ring seal at the top compression ring in house forging process maximizes tensile strength to withstand the stresses of high performance engine environmentsSkirt Coating: Reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise