What is the bore size and compression ratio impact of these pistons?

These pistons are designed for an 86.50mm bore, which is a 0.5mm oversize from the stock bore. They feature an 11.4cc dish, which will lower the compression ratio compared to flat-top pistons. The exact compression ratio will depend on your cylinder head volume and gasket thickness.

What is the advantage of using 2618 alloy forgings?

The 2618 alloy is chosen for its superior strength and ductility compared to other aluminum alloys. This makes it well-suited for high-performance and high-stress engine applications, offering better resistance to detonation and fatigue.

Are these pistons suitable for all engine builds?

This is an Extreme Duty piston set from Manley, intended for high-performance applications. While they are well-built, they are not CARB approved and cannot be shipped to California. Always consult with your engine builder to ensure these pistons are the right choice for your specific build goals and local regulations.

Specifications

Brand: Manley Performance
Part #: 632605CE-4
UPC: 807298101064

Manley 2013+ Subaru FA20 BRZ 86.50mm +.5mm Bore -11.4cc Dish Piston Set w/ Rings (Extreme Duty)

Name: Manley 2013+ Subaru FA20 BRZ 86.50mm +.5mm Bore -11.4cc Dish Piston Set w/ Rings (Extreme Duty)
Brand: Manley Performance
SKU: manley-performance-manley-2013-subaru-fa20-brz-86-50mm-5mm-bore-11-4cc-dish-pist-t14-309653
Price: 901.20 USD
Availability: BackOrder

$901.20

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Manley 2013+ Subaru FA20 BRZ 86.50mm +.5mm Bore -11.4cc Dish Piston Set w/ Rings (Extreme Duty) Piston Set

Key Features

Fits 2013+ Subaru FA20 BRZ.
86.50mm bore size with a 0.5mm oversize.
Features an 11.4cc dish for compression tuning.
Constructed from strong 2618 alloy forgings.
Includes durable chrome moly wrist pins.
Ring lands and grooves are machined to exacting standards for improved seal.

This piston set is designed for 2013 and later Subaru FA20 BRZ models. Always confirm compatibility with your specific vehicle's engine configuration.

⚠️ 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

If you're rebuilding the engine in your 2013 and up Subaru FA20 BRZ, this Extreme Duty piston set from Manley is built for serious performance. These pistons are designed for an 86.50mm bore, which is a 0.5mm oversize from stock, and feature an 11.4cc dish to help achieve your desired compression ratio. Manley is a well-known name among professional engine builders for a reason – their pistons are made to handle demanding builds.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to perform under high stress. They also feature proven cam and barrel skirt profiles. This design helps the piston move smoothly in the cylinder, generating power while also being considerate of the cylinder walls. The ring lands and grooves are machined to strict standards, which is crucial for a good seal and maximizing the power your engine makes. This set also includes premium chrome moly wrist pins for added durability.

This piston set is not CARB approved and cannot be shipped to California. It's important to note that this is a performance part intended for competition use and may not be suitable for street applications depending on your local regulations. Always refer to manufacturer installation instructions for proper fitment and assembly procedures.