Mahle

WRX209937I22

Mahle WRX209937I22 PowerPak 2.5L STI Forester Legacy EJ259 Pistons

Pins

Bore: 100, Stroke: 79, Length: STOCK, Pin: 23, Comp: 30.7/1.209, Dome: -22cc, Weight: 399, C/R: 8.5 to 1
Subaru STi

(Bore: 100, Stroke: 79, Length: STOCK, Pin: 23, Comp: 30.7/1.209, Dome: -22cc, Weight: 399, C/R: 8.5 to 1) Built for the Subaru STi... The Mahle PowerPak is a complete, race proven piston assembly kit. It is composed of hand deburred, 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 its proprietary Grafel anti-friction coating to each piston skirt.Piston Kit Features:Forged from 4032 high silicon low expansion aluminum alloy for high strength and reduced piston to wall clearance.Radiused valve pockets.Forced pin oiling.Precision pin fitting and easy to use round wire locks included.23mm high quality German steel wrist pins (123 grams) INCLUDED.EJ259 - Precision ring grooves for stock rings (rings not included)

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