Manley Performance 04+ Wrx Sti (Ej257) Size (Std) Stroke (79mm) Bore (99.50mm Grade A)

• Made from 2618 alloy, utilize an offset wrist pin design
• Moly coated skirts
• 2.500" x .180" wall premium chrome moly wrist pin (P/N 42346).
• 9310 alloy .210" wall pin upgrades are available (Extreme Duty Series) included (P/N 42546).
• 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

• 99.50mm Grade A Bore size
• STD Over Size
• 79 Stroke
• 5.137" Rod length
• 1.209" Comp distance
• -22 Dome volume(cc)
• 51 Cylinder head(cc)
• 8.5 Comp ratio
• Dish Piston type
• 395 Piston wt/gms
• 46995DT-1 Include ring set