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Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
Manley Performance Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings
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Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings

MAN620000C-4
807298067872
Piston Sets - Forged - 4cyl
11 Units In Stock - Ships Next Business Day
$ 805.63 $ 741.18
$ 741.18

SKU: 620000C-4 | UPC: 807298067872

Manley 2002-2005 Subaru Impreza WRX / 2005 Saab 9-2X Aero 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings

Manley Platinum Series pistons upgrade EJ205 engines to 79mm stroke with 92mm bore for greater displacement in Subaru WRX and Saab 9-2X builds. This set of four forged pistons with rings supports reliable high-rpm power in turbocharged applications. Professional tuners choose these for consistent performance in race and street setups.

Key Features

  • 2618-T61 Alloy Forgings: High-strength aircraft-grade material handles extreme boost and heat for long-term durability
  • 8.5:1 Dish Design: 9cc dome volume optimized for 92mm bore and 79mm stroke in EJ205 blocks with common head gasket setups
  • Proven Skirt Profiles: Cam and barrel shapes reduce rock and friction paired with 30mm compression height for direct stroker fit
  • Tool Steel Wrist Pins: 22mm diameter x 59mm length pins with wire locks secure rod connection under high loads
  • Moly Skirt Coating and Rings: Reduces scuffing with 1.2/1.5/3.0mm ring pack included for quick break-in and cylinder sealing

Product Notes

  • Set includes 4 pistons rings and pins requires matching +4mm stroker crankshaft and full balancing
  • 348 gram piston weight supports revs to 8500 rpm with proper valvetrain
  • Handle with care protective packaging prevents shipping damage

Installation Notes

  • Professional installation recommended.
  • Verify ring end gaps and piston-to-wall clearance at 0.0035-0.0045 inches after honing
  • Compatible with stock rods or aftermarket H-beam rods with ARP hardware

This Part Fits

Year Make Model Submodel
2005 Saab 9-2X Aero
2002-2005 Subaru Impreza WRX

Why Choose Manley?

  • Engine builders rely on Manley for championship-winning motorsports programs
  • Hand-clearanced forgings ensure precise tolerances from the factory
  • Decades of Subaru-specific engineering deliver repeatable results

Frequently Asked Questions

  • Q: Will these pistons fit 2006-2007 Subaru WRX models?
    A: No these are for 92mm bore EJ205 engines only later EJ255 models use 99mm bore pistons
  • Q: What alloy and coatings are used?
    A: 2618-T61 aluminum alloy with moly phosphate skirt coating plus Accumulator Groove for blow-by control
  • Q: What is the warranty and install process?
    A: Manley provides a limited warranty against manufacturing defects professional install includes blueprinting clearances and assembly balance

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Foam-lined Manley box 12 x 10 x 6 inches
  • Weight: 4.8 lbs

Request For Information

Have questions about Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92mm STD Bore 8.5:1 Dish Piston Set with Rings? Fill out the form below and we'll get back to you by the next business day.
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