Manley Performance Platinum Series Forged Piston 2015-2021 WRX | 2618 Alloy Forged | Engine Piston
Overview
The Manley Performance Platinum Series Forged Piston for the 2015-2021 Subaru WRX is a high-strength engine component designed for enthusiasts and professional builders seeking reliable power upgrades and durability. These pistons replace the factory cast units with premium forged 2618 alloy construction, engineered to withstand the increased stresses of boosted and high-performance applications. Ideal for turbocharged WRX builds, these pistons offer a solid foundation for both street and track use.
Manley’s Platinum Series pistons are crafted with precision using advanced manufacturing techniques. Featuring proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select models, these pistons deliver a balance of strength and reduced friction. The unique fixturing process ensures exact ring groove to skirt squareness, enhancing ring seal and overall engine efficiency. This attention to detail sets Manley apart as a trusted name in Subaru engine components.
For Subaru WRX owners, upgrading to Manley’s forged pistons means improved durability under high boost and aggressive tuning. The 2618 alloy provides superior fatigue resistance compared to stock pistons, while the exacting ring lands and grooves help maintain compression and power output. With a stock compression ratio of 10.00:1 and precise bore and stroke compatibility, these pistons integrate seamlessly into your WRX engine build, supporting reliable performance gains and long-term engine health.
Features & Specifications
This Manley Performance Platinum Series Forged Piston is engineered specifically for the 2015-2021 Subaru WRX and features a 2618 alloy forging construction. Crafted from high-strength forged aluminum, it delivers exceptional durability and power potential for Subaru enthusiasts seeking a robust engine foundation.
-
Brand: Manley Performance
-
Product: Platinum Series Forged Piston
-
Part Number: 632700CA-1
-
Fitment: 2015-2021 Subaru WRX
-
Material: 2618 Alloy Forged Aluminum
-
Finish: Moly Skirt Coating (select part numbers)
-
Construction: Precision Forged with Unique Fixturing
-
Origin: Made in USA
-
Bore Diameter: 86.00 mm
-
Engine Stroke: 86.00 mm (Stock)
-
Compression Height: 1.285 in
-
Piston Volume: -13.00 cc
-
Weight: 340 g
-
Compression Ratio: 10.00:1 (Stock)
-
Wrist Pins: Chrome Moly Standard, Optional 9310 or Turbo Tuff/DLC Upgrades
-
Emissions Code: 3
Key Benefits
-
Durability: 2618 alloy forging offers superior strength and fatigue resistance for high-boost and high-RPM applications.
-
Performance: Exact ring lands and grooves improve ring seal, enhancing compression and power output.
-
Fitment: Designed specifically for 2015-2021 WRX engines, ensuring precise bore and stroke compatibility.
-
Friction Reduction: Moly skirt coatings reduce piston-to-cylinder wall friction for smoother operation and longevity.
-
Quality: Manufactured in the USA with strict quality control and unique fixturing for consistent, reliable performance.
-
Upgrade Options: Wrist pin upgrades available for increased durability in demanding builds.
What's Included
- 1× Manley Performance Platinum Series Forged Piston
- Standard Chrome Moly Wrist Pin (upgrade options available separately)
- Installation instructions
Installation & Compatibility
Installation of the Manley Performance Platinum Series Forged Piston requires professional engine building experience and precision machining. Proper honing and clearancing of the cylinder bore are necessary to accommodate forged pistons. This component is intended for use in 2015-2021 Subaru WRX engines with stock bore and stroke dimensions. Tuning adjustments are recommended to optimize performance and ensure engine safety after installation.
-
Professional Installation: Recommended
-
Modifications Required: Cylinder bore honing and possible wrist pin fitment adjustments
-
Verify Compatibility: Confirm fitment for your specific WRX model year and engine build
Shop with confidence at Subimods—your Subaru parts specialists.
