
Manley 100mm +.5mm 8.5 Platinum Series Dish Piston
Upgrade your Subaru WRX STI with the Manley 100mm +.5mm 8.5 Platinum Series Dish Piston. Designed specifically for the EJ257 engine, this piston is crafted to enhance performance while ensuring durability and reliability. Built for the 2004 and newer models, it’s the perfect fit for those looking to boost their engine’s capabilities.
Key Features
- High-Strength Material: Machined from robust 2618 aluminum, these pistons are lightweight yet incredibly strong, providing a long service life.
- Quiet Start-Ups: The offset wrist pin design minimizes noise during start-up, making for a smoother driving experience.
- Precision Engineering: Achieves the perfect ring groove to skirt squareness through a unique "one fixturing" manufacturing process, ensuring maximum horsepower delivery.
- Moly Coated Skirts: Every piston comes with moly coated skirts, reducing friction and enhancing performance.
- Complete Kit: Includes round wire locks, premium chrome moly wrist pins, and top-quality steel rings from Total Seal at no extra cost.
- Upgraded Options: 9310 alloy wrist pins are available for those seeking an even higher performance standard.
Specifications
- Bore Size: 100 mm
- Over Size: +.5 mm
- Rod Length: 5.137"
- Stroke: 75 mm
- Compression Distance: 1.285"
- Dome Volume: -18 cc
- Cylinder Head Volume: 51 cc
- Compression Ratio: 8.5:1
- Piston Type: Dish
- Piston Weight: 438 g
- Premium Steel Top Rings: 461000DT-4
Fitment Information
- Compatible with Subaru WRX STI models from 2004 onwards with the EJ257 engine (Pin size: .9055"/23mm x 2.500" Wall x .210").
Customer Feedback
Customers have praised the Manley pistons for their durability and performance. Many have noted significant improvements in engine response and power delivery after installation. Users appreciate the thoughtful design features, especially the noise reduction during startup and the effective oil control provided by the upgraded rings.
Notes
- This product is sold individually.
Whether you're looking to enhance your daily driver or build a high-performance machine, the Manley 100mm +.5mm 8.5 Platinum Series Dish Piston is a fantastic choice for Subaru enthusiasts. Experience the difference in quality and performance today!
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.
Evolving in the Automotive SpaceLed by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.
What is Manley’s Specialty?Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.
Get Manley Performance at Vivid RacingIf you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.
If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.
Sale price | None |
Wholesale price | $170.40 |
Shipping |
Weight: 1.25 Length: 8 Width: 6 Height: 5 |
Product Added At | Thursday 04 August, 2022 |
Product Modified At | Friday 11 July, 2025 |
Imported By | ETLOverride |
Last Edited By | Turn_API |
View In Admin |
Carb Approved | No |
---|---|
Carb Number | - |
Epa Status | N/A |
Prop65 | Yes |
Carb Required | - |
Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
---|---|---|---|---|---|---|---|---|---|---|
Turn 14 | $144.41 | $190.01 | ? | $174.81 | ? | 2025-07-11 10:31:58 |
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