Manley 99.5mm STD 8.5:1 Turbo Tuff Piston Set for 04+ Subaru WRX/STI EH257
The best aftermarket Subaru piston company just got even better with our new Turbo Tuff lineup targeted specifically for EJ25 engines. By incorporating proven design enhancements from our "Formula-Won" piston forging, we've created the ultimate Subi piston to withstand the rigors of the highest boosted and stressed applications yet still run "quietly" and trouble-free for the daily driver. Like all Manley Subaru pistons, these are made from 2618 alloy, utilize an offset wrist pin design, are skirt coated and include our standard 2.500" x .180" wall premium chrome moly wrist pin (P/N 42346). 9310 alloy .250" wall pin upgrades are available. Simply order the EXTREME DUTY part number in the column below. These come equipped with the 9310 pins (P/N 42547). Premium steel top rings with Napier style second rings and higher tension oil rings for ultimate oil control are included with each set along with round wire locks. 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.
Manley Subaru EJ257 pistons now include Napier style second rings and higher tension oil rings (by Total Seal) for superior oil control.
EXTENDED INFORMATION
- Type: Forged Pistons (Dish)
- Material: High Strength 2618
- Compression Ratio: 8.5:1
- Item Weight: 405 [grams]
- Bore Diameter: 99.50 [mm]
- Size: Standard (STD)
- Stroke: 79 [mm]
- Rod Length: 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 & B
- Engine Code: EJ25
- Notes: Pins and Rings Included (46995DT-4)
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Manley 99.5mm STD 8.5:1 Turbo Tuff Piston Set for 04+ Subaru WRX/STI EH257
