Description
Manley Pistons for the EJ257 motor in the 2006-2014 WRX and 2004+ STi models includes a full set of 4 pistons, wrist pins, ring sets and round wire locks.
See more Manley Pistons for the EJ257 WRX & STi
Vehicle Fitment:
Subaru EJ257
2006-2014 WRX
2004-2021STi
Piston Specs:
| Part Number: | 632402C4 |
| Pin: | Standard .180″ Wall |
| Bore Size: | 99.75mm (+.25) |
| Rod Length: | 5.137″ |
| Stroke: | 83mm Stroker (2.7L) |
| Comp Distance: | 1.130″ |
| Dome Volume: | -26 cc |
| Cylinder Head cc: | 51 |
| Compression Ratio: | 8.5:1 |
| Piston Type: | Dish |
| Weight: | 393 Grams |
| Ring Set: | 46997DT4 |
Turbo Tuff Benefits:
Thicker Skirt Wall
Increased Corner Cross Sections
Formula Won “Strutted” Forging
Outboard Pin Bosses
Offset wrist pin for quiet start-ups
Manley Platinum Series Pistons:
Moly Coated Skirts
2618 high strength material
Lightweight design with offset wrist pin for quiet start-ups
Pressure balance groove
Will accommodate +1mm valve sizes
Premium Steel top rings with Napier second ring
Higher tension oil rings for improved oil control
Round wire locks included
Recommended piston clearance: .003″ for mildly boosted and .0035″ for highly boosted
measured .850″ (79/83mm stroke) and 1.100″ (75mm stroke) from the bottom of the oil ring
Includes:
(4) Pistons
(4) Piston Ring Sets
(4) Wrist Pins
(4) Wire Locks
Images:
Pistons will vary slightly by application. Images are for reference.
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