-5%
Manley Performance Manley Ring Set Subaru EJ205WRX / EJ257 WRX STi 100mm File Fit 1.2mm x 1.2mm x 2.0mm - Set of 4
Manley Performance Manley Ring Set Subaru EJ205WRX / EJ257 WRX STi 100mm File Fit 1.2mm x 1.2mm x 2.0mm - Set of 4
Click to zoom in

Manley Ring Set Subaru EJ205WRX / EJ257 WRX STi 100mm File Fit 1.2mm x 1.2mm x 2.0mm - Set of 4

MAN461000DT-4
807298101163
Piston Rings
20+ Units In Stock - Ships Next Business Day
$ 173.17 $ 164.51
$ 164.51

SKU: 461000DT-4 | UPC: 807298101163

Manley Ring Set Subaru EJ205 WRX EJ257 WRX STI 100mm File Fit 1.2mm x 1.2mm x 2.0mm Set of 4 2002-2021

Manley piston ring set provides exact-fit seals for 100mm bores in Subaru EJ205 and EJ257 engines found in 2002-2021 WRX and STI models. These file-fit rings ensure optimal compression and oil control under high boost and rpm. Built for performance builds this set handles turbocharged demands with reliable durability.

Key Features

  • File-Fit Design: Allows custom end gap filing for precise clearance in 100mm bores matching any piston set
  • Ring Dimensions: 1.2mm top ring 1.2mm second ring 2.0mm oil ring for minimal friction and maximum sealing
  • Advanced Materials: Chrome-faced steel top ring nitrided ductile iron second ring and three-piece flex-vent oil control for heat resistance
  • Performance Engineering: Supports high boost levels up to 40psi with reduced blow-by and consistent power delivery
  • Complete Set: Includes rings for four cylinders covering all pistons in EJ series flat-four engines

Product Notes

  • File rings to achieve proper end gaps based on bore size and piston specs before installation
  • Store in original packaging away from moisture to maintain ring integrity
  • Ships in protective box measuring 6in x 4in x 1in

Installation Notes

  • Professional installation recommended.
  • Verify end gaps using feeler gauge and file square ensuring 0.004-0.005in per inch of bore for top ring
  • Compatible with standard Subaru pistons resized to 100mm no special hardware needed

This Part Fits

Year Make Model Submodel
2002-2005 Subaru Impreza WRX
2004-2007 Subaru Impreza WRX STI
2008-2014 Subaru Impreza WRX
2008-2021 Subaru Impreza WRX STI
2015-2021 Subaru WRX STI

Why Choose Manley?

  • Proven in motorsports from drag racing to rallycross
  • Crafted with tight tolerances for consistent engine performance
  • Backed by engineering focused on high-horsepower Subaru builds

Frequently Asked Questions

  • Q: Does this fit both EJ205 and EJ257 engines?
    A: Yes designed for 100mm bores in EJ205 WRX and EJ257 STI engines across 2002-2021 models after boring
  • Q: What materials are used in these rings?
    A: Top ring is reverse bevel chrome-faced steel second is nitrided ductile iron oil ring is three-piece steel flex-vent for durability
  • Q: What warranty applies?
    A: Manley offers limited lifetime warranty against manufacturing defects when installed correctly

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Secure padded box 6 x 4 x 1 inches
  • Weight: 0.65 lbs

Request For Information

Have questions about Manley Ring Set Subaru EJ205WRX / EJ257 WRX STi 100mm File Fit 1.2mm x 1.2mm x 2.0mm - Set of 4? Fill out the form below and we'll get back to you by the next business day.
Engine

Engine

Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...

View Engine Products
Manley Performance

Manley Performance

Manley Performance is a New Jersey-founded engine internals manufacturer stocked at Black Ops Auto Works, supplying forged pistons, connecting rods, valves, and crankshafts across domestic and import platforms. Shop Manley H-Beam and H-Tuff connecting rods, Race Master Series valves, forged crankshafts, and valve springs for Ford Modular and Coyote, Chrysler HEMI, Subaru EJ and FA, Nissan SR20 and 2JZ, Honda B and H-series, and Mitsubishi 4B11T and Mazda MZR platforms. Every product is filterable by year, make, model, and engine code so the correct part ships the first time. Black Ops Auto Works carries 270 Manley Performance SKUs across pistons, rotating assembly, and valvetrain components. About Manley Performance Founded in 1966 by Hank Manley as Manley Speed Equipment, Manley Performance has grown into one of the most established names in high-performance engine internals. From grassroots drag racing roots in New Jersey to a second manufacturing facility in Orange, Californi...

View Manley Performance Products
Piston Rings

Piston Rings

Piston rings for street, race, turbocharged, and rebuilt engines are stocked at Black Ops Auto Works. Shop moly ring sets, file-fit rings, metric bore rings, compression rings, oil control rings, replacement rings, forged-piston ring packs, 4-cylinder rings, 6-cylinder rings, V8 rings, and engine rebuild components for Honda K-series, Nissan RB and SR, Toyota 2JZ, GM LS and LT, Ford Coyote, Chrysler, and other performance platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 242 piston ring SKUs across bore sizes, ring-groove dimensions, material choices, cylinder-specific replacements, forged-piston combinations, and complete engine rebuild planning. What This Piston Ring Collection Covers Piston rings seal combustion pressure, control oil on the cylinder wall, and transfer heat from the piston to the cylinder. This collection includes complete ring sets and single-cylinde...

View Piston Rings Products
Pistons

Pistons

Pistons and piston components for engine builds and rebuilds are stocked at Black Ops Auto Works. Shop forged and cast piston sets, piston rings, piston pins, and pin locks for 4, 5, 6, and 8-cylinder gas engines and diesel applications, including Cummins 5.9L 12-valve, Toyota 2JZGTE, Honda K20, BMW and Toyota B58, GM 6.2L LT1 and L86, Chrysler Gen3 Hemi 6.2L Hellcat and 6.4L Apache, and Nissan VQ35DE builds. Every product is filterable by bore size, engine platform, compression ratio, and application so the correct piston set ships the first time. Black Ops Auto Works carries 997 piston and piston component SKUs across forged, cast, and diesel-specific categories. What This Category Covers Pistons are the core moving component of any engine build, transferring combustion force into rotational power through the connecting rod and crankshaft. This category covers complete piston sets plus the individual components, rings, pins, and pin locks, needed for a full rebuild or performa...

View Pistons Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×