What is the compression ratio of these pistons?

These pistons feature a 9.0:1 compression ratio. This is a common ratio that offers a good balance for naturally aspirated builds or for use with forced induction systems.

What is included in this piston set?

This set includes the pistons, rings, and wrist pins necessary for installing them into your engine. You will have the core components needed for the piston replacement.

Are these pistons suitable for use with a turbocharger?

Yes, the 9.0:1 compression ratio and the strong 2618 alloy construction make these pistons suitable for many turbocharged SR20DET applications. Always consult with your engine builder for specific tuning and setup recommendations.

Specifications

Brand: Manley Performance
Part #: 638005C-4
UPC: 807298095318

Manley Nissan (SR20DE/DET) 86.5mm +.5mm Oversized Bore 9.0:1 Dish Piston Set with Ring

Name: Manley Nissan (SR20DE/DET) 86.5mm +.5mm Oversized Bore 9.0:1 Dish Piston Set with Ring
Brand: Manley Performance
SKU: manley-performance-manley-nissan-sr20de-det-86-5mm-5mm-oversized-bore-9-0-1-dish-t14-25766
Price: 758.81 USD
Availability: BackOrder

$758.81

On Backorder

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Manley Performance forged piston set for Nissan SR20DE/DET engines. 86.5mm bore, 9.0:1 dish pistons.

Key Features

Fits Nissan SR20DE and SR20DET engines.
Pistons are 86.5mm bore, which is 0.5mm oversized.
Features a 9.0:1 compression ratio with a dish top.
Constructed from domestic 2618 alloy forgings for strength.
Includes premium Chrome Moly wrist pins.
Designed with cam and barrel skirt profiles to reduce cylinder wall wear.

This piston set is designed for Nissan SR20DE and SR20DET engines. Please verify compatibility with your specific vehicle and 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

Manley Performance is well-known for making strong engine components that serious builders trust. This piston set is built for Nissan SR20DE and SR20DET engines, featuring an 86.5mm bore that's 0.5mm oversized. These pistons have a 9.0:1 compression ratio, making them a solid choice for many performance builds where you want a bit more compression than stock but still need to run on pump gas or want a good balance for forced induction.

These pistons are made from domestic 2618 alloy forgings, which is a strong material chosen for its ability to handle high performance demands. They come with premium Chrome Moly wrist pins for added durability, and the skirt profiles are designed to be gentle on your cylinder walls while still helping to generate power. Manley pays close attention to the ring lands and grooves, ensuring a good seal for better performance. They also use a unique machining process that keeps the ring grooves square to the piston skirt, which is important for consistent sealing under pressure.

This set includes the pistons, rings, and wrist pins needed for a complete engine rebuild. Keep in mind that these are not CARB approved and cannot be shipped to California. If you're rebuilding the top end of your SR20, these pistons offer a well-built foundation for your project.