What is the bore size for these pistons?

These JE Pistons are designed for a 3.425-inch bore size. This is a standard size for the BMW S52B32US engine, but it's always a good idea to measure your cylinder walls to confirm.

What is included in this piston kit?

This kit includes a set of six pistons, high-quality wrist pins, wrist pin locks, and JE Pro Seal premium piston rings. Everything you need to install the pistons is provided.

Are these pistons suitable for street use or only racing?

While designed for high-demand performance applications and proven in racing, the features like skirt coatings and accumulator grooves can also contribute to reduced noise and improved ring seal for street use. However, the 11.5:1 compression ratio is typically for performance builds.

JE Pistons Forged Piston Set 297173 - BMW S52B32US

Name: JE Pistons BMW S52B32US 11.5KIT Set of 6 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bmw-s52b32us-11-5kit-set-of-6-pistons-t14-295970
Price: 1324.99 USD
Availability: InStock

JE Pistons BMW S52B32US 11.5KIT Set of 6 Pistons

$1324.99

Only 1 left in stock

JE Pistons BMW S52B32US 11.5KIT Set of 6 Pistons. Forged from 2618 aluminum for high-demand performance.

Key Features

Fits BMW S52B32US engines.
Forged in the USA using 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.
Features an 11.5:1 compression ratio for improved performance.
Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings.
Piston skirts may include a coating to reduce friction and wear, depending on application.

This piston set is designed for the BMW S52B32US engine. Please verify compatibility with your specific vehicle and engine configuration.

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Product Details

If you're rebuilding the top end of your BMW S52B32US engine for serious performance, a set of high-strength forged pistons is a critical component. JE Pistons has been a leader in this field for over 75 years, and this set is built specifically for your engine's demands, offering a blend of durability and performance that's proven on the track.

These pistons are forged in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is essential for handling the increased pressures and temperatures of a performance-tuned engine. They feature JE's proprietary Forged Side Relief (FSR) design, which helps reduce friction and skirt wear by using a shorter wrist pin and reduced skirt width, also saving weight. Depending on the specific application, these pistons may also include an accumulator groove to improve ring seal and reduce fluttering, and a skirt coating to further minimize friction, wear, and operating noise. This kit is designed for an 11.5:1 compression ratio, giving you a notable bump in power potential.

This set includes everything you need to get your engine rebuilt: six pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. They are precision machined to a 3.425-inch bore size. Please note that these pistons are not CARB approved and cannot be shipped to California.