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

These Manley pistons have a bore size of 81.5mm, which is 0.5mm oversized from the factory specification. They also feature an 11.0:1 compression ratio, raising it from the stock configuration.

What material are these pistons made from and why is it important?

These pistons are forged from a domestic 2618 alloy. This material is chosen for its superior strength and ability to withstand the high pressures and temperatures found in performance engines, making them more durable than stock cast pistons.

Are these pistons compatible with all B-series engines?

These specific pistons are designed for B16A1, B16A2, and B16A3 engines found in the 1994-1997 Honda Civic del Sol and the 1999-2000 Honda Civic SI. Always verify your specific engine code before purchasing.

Specifications

Brand: Manley Performance
Part #: 603005-4
UPC: 807298027005

Manley 93-97 Honda Del Sol / 99-00 Honda Civic SI (B16A1-A2-A3) 81.5mm +.5mm Oversized Bore 11.0:1 D

Name: Manley 93-97 Honda Del Sol / 99-00 Honda Civic SI (B16A1-A2-A3) 81.5mm +.5mm Oversized Bore 11.0:1 D
Brand: Manley Performance
SKU: manley-performance-manley-93-97-honda-del-sol-99-00-honda-civic-si-b16a1-a2-a3-8-t14-5664
Price: 693.90 USD
Availability: BackOrder

$693.90

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Fits 1994-1997 Honda Civic del Sol. Manley forged pistons for B16A1-A2-A3 engines, 81.5mm bore, 11.0:1 compression. Built for performance.

Key Features

Fits 1994-1997 Honda Civic del Sol and 1999-2000 Honda Civic SI.
Forged from domestic 2618 alloy for superior strength and performance.
Features an 81.5mm bore size, which is 0.5mm oversized from stock.
Offers an 11.0:1 compression ratio for improved power output.
Includes proven cam and barrel skirt profiles to reduce cylinder wall wear.
Exacting ring lands and grooves ensure enhanced ring seal and power.

⚠️ 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 1994-1997 Honda Civic del Sol or a 1999-2000 Civic SI with a B16A1, A2, or A3 engine, these Manley forged pistons are a solid choice for a performance build. These pistons are designed to handle increased cylinder pressures and temperatures that come with performance tuning and racing applications. They are 81.5mm in bore size, which is 0.5mm larger than stock, and feature an 11.0:1 compression ratio, raising it from the factory specification.

Manley uses their signature 2618 alloy forgings for these pistons, which are known for their strength and ability to withstand the demands of high-performance engines. The pistons also feature proven cam and barrel skirt profiles, which help reduce friction and wear on the cylinder walls while still generating substantial power. The ring lands and grooves are machined to exacting standards to ensure a tight seal with the piston rings, leading to better combustion efficiency and more power output. Each set includes premium chrome moly wrist pins for added durability.

These pistons are a significant upgrade over stock cast pistons, offering the durability and performance needed for serious engine builds. It's important to note that these pistons are not CARB approved and cannot be shipped to California. When installing, ensure you follow proper engine building procedures and torque specifications to get the most out of this well-built component.