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SUB EJ25 DOHC 11.5:1 KIT Set of 4 Pistons

Part Number 314340 (132585752)
$899.99
Out of stock

Description

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for European, import and sport compact applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons? performance is proven in victory lane time and time again. Equip your engine with the best in forged pistons.

JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE Pistons 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.

MADE IN USA

Features & benefits

  • Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
  • Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
  • Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
  • Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
  • Designed specifically for each engine and use application to provide optimized performance durability
  • Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
  • Made 100% in the USA

Specifications

2nd Groove Width 0.048
Add-On JG4901-3937
Bore Diameter 100.00
Compression Height 1.191
Compression Ratio 0.46180555555556
Connecting Rod Length 5.167 IN
Country Of Origin USA
Cylinder Head EJ25 DOHC
Engine EJ Series
Engine Displacement 2457
Engine Stroke 3.110
Engine Type ICE
Exhaust Angle 23
Exhaust Depth .150
Exhaust Diameter 1.450
Forging Type Round
Industry Automotive
Intake Angle 23
Intake Depth .150
Intake Diameter 1.450
Make Subaru
Oil Groove Width 0.09950
Oil Ring Thickness 0.0995
Piston Average Weight 424
Piston Head Type Dome
Piston Material 2618
Piston Quantity 4
Piston Series JE Pistons
Piston To Wall Clearance -0.0036
Piston Volume -1.50
Product Market Sport Compact
Product Type Engine Piston Kit
Ring Set - Recommended JG4901-3937
Ring Set Included Yes
Ring Set Part Number JG4901-3937
Second Compression Ring Thickness 0.0480
Top Compression Ring Thickness 0.0480
Top Groove Width 0.04800
Wrist Pin Length 2.250
Wrist Pin Material 5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter 0.905
Wrist Pin Wall Thickness 0.180

Warranty

30 Months

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).

California residents

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Carb Status

California carb status to be completed

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