Manley Platinum Series Forged Piston - STD Size - 99.50mm Grade A - 04+ Subaru WRX STi

The Manley Performance Platinum Series Lightweight Pistons are strong, lightweight but robust enough to ensure long lasting service life. They utilize offset wrist pins to create a quieter start up! These provide a Drop-In installation!

Recommended clearance of .003" for mildly boosted and .0035" for highly boosted vehicles measured .850" (79/83mm Strokes) and 1.100" (75mm Stroke) from the bottom of the oil ring groove.

This piston features a skirt diameter that corresponds to the OEM Grade A bore. Check the bore grades on the top of your block and order the appropriate quantities of Grade A or B pistons. 

Applications:

• Subarus with EJ25 Motor

Features

Made from 2618 High Strength Material for superior weight to strength ratio
Offset wrist pins designed for quieter start-ups
All Pistons come with moly coated skirts
"Total Seal" Round Wire Locks, Chrome Moly Wrist Pins & Premium Steel Top Ring Sets Included
Sold Individually (Add the appropriate amount of quantity)

Extended Information

Type: Forged Pistons (Dish)
Material: High Strength 2618
Compression Ratio: 8.5:1
Item Weight: 395 [grams]
Bore Diameter: 99.50 [mm]
Size: Standard (STD)
Stroke: 79 [mm] 
Rod: Standard Size 5.137[inches]
Compression Height: 30.7 [mm] / 1.209 [inches]
Head cc's: 51
Dome Volume: -22 cc
Bore Oversize: Grade A
Engine Code: EJ25
Notes: Pins and Rings Included