Wiseco AP Forged Pistons Subaru WRX STi EJ257 WRX 100mm +0.5mm -19 cc 8.6:1



Our Sport Compact pistons are made from dedicated forgings produced in-house to give you a light weight piston with superior strength and optimal design. Being the multivalve piston technology leader, the line features specially designed valve pockets, complex dome and crown shapes, the steel nitride/napier xx rings and optimized skirt profiles. The pistons come standard with our ArmorGlide coating material for reduced friction and noise, freeing up horsepower.


More Information
Availability New In Stock / Available
Item Weight 385 g
Shipping Weight (Dimensional) 6.000000
Clearance Sale No
Availability Available
Part Type Pistons
Make Subaru
Vehicle Model WRX STi
Model STi 04-07 GD, STi 08-14 GR, STi 15+ 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 8.6:1
Compression Ratio Range 8.0:1 - 9.0:1
Pin Size 0.905" / 23mm
Included Ring Set 10000VF
Included Pin S805
Head cc 56 cc
Face Type Dish
Dome cc -19 cc
Compression Height 1.209" / 30.7mm
Piston Coating Crown Coating, Skirt Coating
Brand Wiseco
Skirt Type Slipper Skirt
Piston Material 2618
Carb Legal Unspecified
Wrist Pin Wall Thickness 0.180"
Wrist Pin Dimensions .905" x 2.500" x .180"
Pin Material 52100 Steel


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