What material are these Wiseco pistons made from?

These Wiseco pistons are forged from 2618 aluminum. This material is chosen for its improved tensile strength, which makes the pistons well-suited for high-performance and heavy-duty engine builds.

What is the purpose of the ArmorGlide skirt coating?

The ArmorGlide skirt coating on these pistons helps to reduce friction between the piston skirt and the cylinder wall. It also provides seizure resistance and contributes to quieter operation of the engine.

Are these pistons compatible with all BMW M20 engines?

This specific piston set is designed for the BMW M20B25 engine. While other M20 variants exist, it's important to confirm the exact bore size and specifications match your particular engine model before installation.

Wiseco Forged Pistons Set KE319M845 - BMW M20B25

Name: Wiseco BMW M20B25 +6.20CC 1.366in x 3.3628in Dome Pistons (Set of 6)
Brand: Wiseco
SKU: wiseco-wiseco-bmw-m20b25-6-20cc-1-366in-x-3-3628in-dome-pistons-set-of-6-t14-655095
Price: 802.99 USD
Availability: BackOrder

Wiseco BMW M20B25 +6.20CC 1.366in x 3.3628in Dome Pistons (Set of 6)

$802.99

On Backorder

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

Wiseco forged pistons for BMW M20B25 engines. Set of 6, 84.50mm bore. Built for severe duty race builds.

Key Features

Fits BMW M20B25 engines.
Set includes six forged pistons.
Made from 2618 aluminum for improved tensile strength.
Features a dome design with +6.20CC volume.
84.50 mm bore diameter and 33.94 mm compression height.
Includes precision ring grooves, anti-detonation groove, and improved ring seal features.

This piston set is specifically designed for BMW M20B25 engines. Please verify compatibility with your specific vehicle and engine configuration.

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Product Details

If you're rebuilding the engine in your BMW M20B25, these forged pistons from Wiseco are a solid option for serious performance builds. Wiseco has engineered these pistons from 2618 aluminum, which is known for its improved tensile strength, making them well-suited for the demands of racing and heavy-duty applications. They are forged and machined right here in the USA, ensuring a high level of manufacturing oversight.

These pistons feature a dome design with a +6.20CC volume, and they measure 84.50 mm in bore diameter with a 33.94 mm compression height. You'll find precision ring grooves, an anti-detonation groove, and other features designed to improve ring seal. The crown is also fully machined for accuracy. For added durability and reduced friction, Wiseco has applied an ArmorGlide skirt coating, which helps resist seizure, lowers friction, and contributes to quieter operation. The pin bores are designed for forced pin oiling, which is crucial for keeping the piston pin lubricated under high stress.

This set includes six pistons, enough for a complete engine rebuild. Please note that these pistons are not CARB approved and cannot be shipped to California. They are designed for heavy to severe duty performance applications, so they're built to handle significant stress and heat.