What is the purpose of the 26cc dish in this piston?

The 26cc dish is a specific volume designed into the piston crown. It helps to lower the overall compression ratio of the engine when used with compatible cylinder heads and head gaskets, which is often necessary for forced induction applications or specific engine builds.

What material are the wrist pins made from?

These pistons come standard with premium chrome moly wrist pins. Manley also offers upgraded wrist pin options in 9310 and Turbo Tuff/DLC alloys for even greater durability in demanding applications.

Are these pistons coated?

Select Manley piston part numbers feature moly skirt coatings. While this specific part number (622002C-1) is not explicitly listed as having a skirt coating in the provided description, it does feature proven cam and barrel skirt profiles designed for reduced wear.

Specifications

Brand: Manley Performance
Part #: 622002C-1
UPC: 807298068060

Manley Subaru WRX STI 26cc Dish Piston (Single Piston)

Name: Manley Subaru WRX STI 26cc Dish Piston (Single Piston)
Brand: Manley Performance
SKU: manley-performance-manley-subaru-wrx-sti-26cc-dish-piston-single-piston-t14-366987
Price: 189.71 USD
Availability: BackOrder

$189.71

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2004-2011 Subaru Impreza. Manley 26cc dish piston for improved engine performance and durability.

Key Features

Fits 2004-2011 Subaru Impreza.
Constructed from domestic 2618 alloy forgings for strength and performance.
Features a 26cc dish volume for specific compression ratio tuning.
Includes proven cam and barrel skirt profiles to reduce cylinder wall wear.
Machined to exacting standards for enhanced piston ring seal and power.
Comes standard with premium chrome moly wrist pins for durability.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Built from domestic 2618 alloy forgings, these Manley pistons are a solid choice for anyone rebuilding or upgrading their Subaru Impreza's engine. The 26cc dish design is specifically chosen to work with certain engine configurations, helping to achieve a desired compression ratio when paired with the right cylinder heads and gasket thickness. Manley is well-known in the performance engine building world, and their pistons are often found in serious builds for a reason.

What sets these apart is the attention to detail in their construction. They feature proven cam and barrel skirt profiles, which are shaped to reduce friction and wear on your cylinder walls while still generating substantial power. The ring lands and grooves are machined to very strict standards, which is crucial for getting a good seal from your piston rings, leading to better compression and more power. Plus, they come standard with premium chrome moly wrist pins for added durability.

If you're working on a 2004 to 2011 Subaru Impreza and need a reliable piston, these Manley units are a popular option. Just remember that these are not CARB approved and cannot be shipped to California.