Mahle MS PowerPak Plus Forged Pistons Subaru WRX STi EJ257 100mm +0.5mm -14.1 cc 9.0:1


Not in stock, but we will contact the manufacturer and other warehouse distributors to find out how quickly we can get it to you.


The Mahle PowerPak Plus 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 file fit 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.


More Information
Note PowerPak Plus 2618 Alloy & Hard Anodized Top Ring Groove For Extreme Duty Applications.
Item Weight 408.7 g
Shipping Weight (Dimensional) 6.000000
Clearance Sale No
Availability Call
Part Type Pistons
Make Subaru
Vehicle Model STi
Model STi 04-07 GD, STi 08-14 GR, STi 15-21 VA
Engine EJ257, EJ257B
Rod Length 5.137" / 130.5mm
Rod Length Oversize Standard Length
Bore Diameter 100mm
Bore Oversize 0.020" / 0.5mm
Stroke 79mm (Standard Stroke)
Compatible with Stock Sleeves Yes
Requires Aftermarket Sleeves No
Compression Ratio 9.0:1
Compression Ratio Range 8.0:1 - 9.0:1, 9.0:1 - 10.0:1
Pin Size 0.905" / 23mm
Head cc 56 cc
Face Type Dish
Dome cc -14.1 cc
Compression Height 1.208" / 30.7mm
Piston Coating Skirt Coating
Brand MAHLE Motorsports
Skirt Type Slipper Skirt
Piston Material 2618
Carb Legal Unspecified
Wrist Pin Wall Thickness 0.187"
Wrist Pin Dimensions .905" x 2.260" x .187"
Shipping Label Free Shipping


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