Manley Performance 04+ Subaru WRX STi (EJ257) STD Stroke 99.5mm STD Bore 9.8:1 Dish Pisto
Features
Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Offset wrist pin design is utilized for quiet start-ups. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. All pistons come with moly coated skirts. 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. 9310 alloy upgraded wrist pins are available. 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: 99.5mm
- Over Size: STD
- Stroke: 79
- Rod length: 5.137"
- Comp distance: 1.209"
- Dome volume: -10cc
- Cylinder head: 51cc
- Comp ratio: 9.8
- Dish Piston type
- Piston wt/gms: 419g
- Include ring set: 46995DT-4
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008 | Subaru | Impreza | 2.0R |
| 2009 - 2010 | Subaru | Impreza | 2.5 GT |
| 2006 - 2011 | Subaru | Impreza | 2.5i |
| 2010 - 2011 | Subaru | Impreza | 2.5i Premium |
| 2005 - 2011 | Subaru | Impreza | Outback Sport |
| 2004 | Subaru | Impreza | Outback, TS |
| 2009 - 2012 | Subaru | Impreza | R, WRX Premium |
| 2004 - 2005 | Subaru | Impreza | RS |
| 2008 - 2012 | Subaru | Impreza | Sport |
| 2012 | Subaru | Impreza | Touring, Limited, Sport Premium, Premium, Sport Limited, Base |
| 2006 - 2012 | Subaru | Impreza | WRX Limited |
| 2007 - 2012 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition, 2.5i Limited, WRX GT, WRX SE |
| 2006 - 2007 | Subaru | Impreza | WRX TR |
| 2004 - 2012 | Subaru | Impreza | WRX, WRX STI |
| 2011 | Subaru | Impreza | XV |