Manley Performance 04+ Subaru WRX STi (EJ257) STD Stroke 99.75mm +.25mm Bore 9.8:1 Dish

• Made from 2618 alloy, utilize an offset wrist pin design
• Deliver long service life
• Moly coated skirts
• Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower
• 9310 alloy .210" wall pin (Extreme Duty Series) included P/N 42548
• Will accommodate +1mm valve sizes
• Round wire locks, premium chrome moly wrist pins, and premium steel top ring sets from Total Seal are included with every kit at no additional charge.
• Recommended clearance: .003" for mildly boosted and .0035" for highly boosted measured .850" (79/83mm Strokes) and 1.100" (75mm Stroke) from the bottom of the oil ring groove.

Specifications

• Bore size : 99.75mm
• Over Size : +.25mm
• Rod length : 5.137"
• Stroke : 79
• Comp distance : 1.209"
• Dome volume: -10cc
• Cylinder Head : 51cc
• Dish Piston type
• Comp. Ratio : 9.8
• Piston wt/gms : 423g
• Include ring set : 46997DT-4