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Manley 100mm +.5mm 8.5 Platinum Series Dish Piston Set of 4 w/ Rings Subaru WRX Sti EJ257 2.35L 2004+
$699.23
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Manley 100mm +.5mm 8.5 Platinum Series Dish Piston Set

Upgrade your Subaru WRX STI with the Manley 100mm +.5mm 8.5 Platinum Series Dish Piston Set. Designed specifically for the EJ257 engine (2.35L) from 2004 and onward, this piston set combines lightweight construction with exceptional durability, ensuring your vehicle performs at its best.

Key Features

  • High-Strength Material: Crafted from robust 2618 aluminum, these pistons are engineered to withstand the rigors of high-performance driving.
  • Quiet Start-Up: The unique offset wrist pin design minimizes noise during start-up, providing a smoother engine operation.
  • Precision Manufacturing: Manley’s innovative "one fixturing" method guarantees perfect ring groove to skirt squareness, maximizing horsepower output.
  • Moly Coated Skirts: Each piston features moly-coated skirts for reduced friction and improved longevity.
  • Comprehensive Kit: Included in your purchase are round wire locks, premium chrome moly wrist pins, and high-quality top ring sets from Total Seal, ensuring you have everything you need for installation.

Specifications

  • Bore Size: 100mm
  • Over Size: +.5mm
  • Rod Length: 5.137"
  • Stroke: 75mm
  • Compression Distance: 1.285"
  • Dome Volume: -18cc
  • Cylinder Head Volume: 51cc
  • Compression Ratio: 8.5
  • Piston Type: Dish
  • Piston Weight: 438 grams
  • Premium Steel Top Rings Part Number: 461000DT-4

Fitment

  • Subaru WRX STI (2004 and newer) - EJ257 with a pin size of .9055"/23mm x 2.500" and a wall thickness of .210"

Installation Notes

  • Sold as a set of 4 pistons, perfect for a complete engine rebuild or upgrade.
  • Recommended clearance: .003" for mildly boosted applications and .0035" for highly boosted setups, measured from the bottom of the oil ring groove.

Customer Reviews

Customers have praised the Manley 100mm piston set for its reliability and performance enhancement. Many users report noticeable improvements in engine response and power delivery, making it a popular choice among Subaru enthusiasts. The quality of the materials and the precision engineering are frequently highlighted, ensuring that these pistons meet the demands of both street and track applications.

With the Manley Platinum Series Dish Piston Set, you're not just upgrading your engine; you're investing in performance, reliability, and peace of mind. Experience the difference in your Subaru WRX STI today!

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Vehicle
2004-2022
Subaru STI

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How did Manley Performance Start?

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 Space

Led 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 Racing

If 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.

Due to the intended usage of the products sold by Manley Performance Products, Inc., they are sold WITHOUT WARRANTY OR ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR THE INTENDED PURPOSE. Manley Performance Products, Inc. shall not, under any circumstances, be liable for any special, consequential or incidental damages, including but not limited to loss of profits or revenue, loss of other property or equipment, cost of purchased or replacement of goods, or claims by customers of the purchaser, which may arise and/or result from the sale, installation or use of these parts. Installation of parts intended for “off-highway” use could adversely affect the vehicle manufacturer’s warranty coverage. Subject to applicable state law. Some items may not be legal for use in California on pollution controlled vehicles. All weights specified are approximate and subject to manufacturing tolerances. Manley Performance Products, Inc. reserves the right to make changes in design, specifications, materials, or make product changes without incurring liability or obligation with respect to similar product previously manufactured. If technical advice is offered or given in connection with the use of any Products it will be as an accommodation to Buyer and without charge and Seller shall have no responsibilities or liabilities whatsoever for the content or use of such advice.

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