-5%
Click to zoom in
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
Engine
Shop engine parts, oil catch cans, engine cooling upgrades, thermostats, thermostat housings, radiators, coolant accessories, supercharger pulleys, idler pulleys, tensioner pulleys, throttle bodies, engine covers, fuse box covers, cap covers, valve covers, oil system parts, ignition parts, sensors, gaskets, fuel delivery parts, and engine bay dress-up accessories at Black Ops Auto Works. This collection is built for performance vehicles, trucks, SUVs, muscle cars, boosted builds, HEMI platforms, Hellcat builds, Trackhawk SUVs, RAM TRX trucks, LS-powered builds, and high-horsepower street or track applications. Whether you are improving oil control, reducing heat soak, upgrading cooling, supporting higher boost, cleaning up the engine bay, replacing worn engine components, or preparing a street car for harder driving, this collection helps you shop engine parts by brand, category, vehicle platform, and performance goal. Shop Engine Parts by Category Browse engine upgrades and replace...
View Engine Products
Manley Performance
Founded in 1966 by Hank Manley, Manley Performance Products has become one of the most respected names in high-performance engine components. Originally launched as Manley Speed Equipment, the company quickly earned a reputation for precision manufacturing, durability, and race-proven performance. From grassroots beginnings in New Jersey to global recognition in professional motorsports, Manley Performance continues to set the standard in high-performance automotive parts. Manley Performance Engine Parts Manley is known for manufacturing premium internal engine components designed for street, strip, and professional racing applications. Their product line includes: Manley stainless steel valves Manley forged pistons Manley connecting rods (H-Beam, I-Beam, Turbo Tuff, Pro Series) Manley camshafts Manley crankshafts Manley valvetrain components Valve springs, retainers, and hardware Every Manley component is engineered with strict quality control and race-driven innov...
View Manley Performance Products
Piston Rings
Welcome to our Piston Rings collection, where precision meets performance. This curated selection features high-quality piston rings designed to enhance engine performance and efficiency. Whether you're a professional mechanic or a DIY enthusiast, our range has something for everyone. Why Choose Our Piston Rings? Durability: Crafted from premium materials to withstand high temperatures and pressures. Performance: Engineered to provide optimal sealing and reduce blow-by, improving overall engine performance. Compatibility: A wide range of options available for various engine types and models. Easy Installation: Designed for straightforward installation, saving you time and effort. Featured Products Explore some of our top-rated piston rings: Piston Ring Set for Ford 5.0L Performance Piston Rings for Chevy LS Series Universal Piston Ring Set for Small Engine Applications High-Performance Piston Rings for Turbocharged Engines Shop with Confidence When you choose our Pisto...
View Piston Rings Products
Pistons
Welcome to our Pistons collection, where quality meets performance. Whether you're a professional mechanic or a DIY enthusiast, our curated selection of pistons is designed to enhance your engine's efficiency and reliability of your engines performance. Why Choose Our Pistons? High-Quality Materials: Our pistons are crafted from top-notch materials to ensure durability and longevity from various manufactues. Enhanced Performance: Designed to optimize your engine's performance, our pistons deliver power and efficiency for all makes and models. Wide Range: Choose from a variety of sizes and specifications to meet your specific needs from daily drivers torace cars. Competitive Pricing: Enjoy premium quality without breaking the bank. Shop Our Pistons Collection Browse through our extensive range of pistons below: High-Performance Racing Pistons Standard Replacement Pistons Lightweight Forged Pistons Custom Fit Pistons Experience unmatched performance with our Pistons...
View Pistons Products