Manley Turbo Tuff Extreme Duty Forged Pistons Set Subaru STi EJ257 WRX 99.5mm STD -22cc 8.0:1

SKU
632200CE-4
$880.72
Back Ordered

This item is out of stock at the manufacturer level, and experiencing a known global supply delay. Contact us for the latest availability date estimation.

Description


EJ25 - PLATINUM SERIES TURBO TUFF EXTREME DUTY PISTONS


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.

These come equipped with the 9310 pins (P/N 42547) .250" wall pin upgrade. 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" (79mm Stroke) from the bottom of the oil ring.

Manley Subaru EJ257 pistons now include Napier style second rings and higher tension oil rings (by Total Seal) for superior oil control.

  • 2618 high strength material
  • Offset wrist pin for quiet start-ups
  • 9310 alloy .250” wall pin (Extreme Duty Series) included P/N 42547
  • Pressure balance groove
  • Will accommodate +1mm valve sizes
  • Premium Steel top rings with Napier seconds and 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

Specifications

More Information
Note Extreme Duty Pistons with Pin upgrade.
Item Weight 405 g
Shipping Weight (Dimensional) 5.000000
Clearance Sale No
Availability Back Ordered
Part Type Pistons
Make Subaru
Vehicle Model Impreza WRX STi
Model STi 04-07 GD, STi 08-14 GR, STi 15-21 VA
Engine EJ257, EJ257B
Rod Length 5.137" / 130.5mm
Rod Length Oversize Standard Length
Bore Diameter 99.5mm
Bore Oversize Standard Bore
Stroke 79mm (Standard Stroke)
Compatible with Stock Sleeves Yes
Requires Aftermarket Sleeves No
Compression Ratio 8.0:1
Compression Ratio Range 7.0:1 - 8.0:1, 8.0:1 - 9.0:1
Pin Size 0.905" / 23mm
Included Ring Set 46995DT-4
Included Pin 42547-4
Head cc 57 cc
Face Type Dish
Dome cc -22 cc
Compression Height 1.209" / 30.7mm
Piston Coating Skirt Coating
Brand Manley Performance
Skirt Type Full Round
Piston Material 2618
Carb Legal Unspecified
Wrist Pin Wall Thickness 0.210"
Wrist Pin Dimensions .905" x 2.500" x .250"
Pin Material 9310 Steel
Shipping Label Free Shipping

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