Mahle PowerPak Pistons for WRX 2.5L STi Legacy 99.50mm BoreDescriptionIN STOCK SAME DAY SHIPPING!!!BRAND NEW IN BOXPART# WRX209917I10 The MAHLE PowerPak is a complete, race proven piston assembly kit composed of hand deburred, all forged, performance coated pistons, high quality steel pins, round wire locks and low drag performance rings. Performance coatings include a phosphate dry lubricant that is used to protect against ring micro-welding and pin galling during initial startup and break in. For added performance, MAHLE applies it's proprietary Grafal anti-friction coating to each piston skirt. The MAHLE PowerPak was designed as a completely finished drop-in piston assembly. Other than filing the included performance ring set, everything else is done for you. * Forged from 4032 low expansion aluminum alloy for high strength and reduced piston to wall clearance * Radiused valve pockets * Forced Pin Oiling * Precision Pin Fitting and Race Proven Round Wire Locks included * 23mm high quality steel wrist pin (123 grams) included * Precision Ring Grooves for 1.2, 1.2, 2.8mm rings included For: SUBARU WRX 2.5L STI FORESTER LEGACY STROKE: 79.0 MM ROD LENGTH: 130.4MM COMPRESSION RATIO: 9.0:1
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