What is the bore size of these pistons?

These Wiseco pistons have a bore size of 77.50mm. This is 0.50mm larger than the standard bore size, often referred to as an 'oversize' piston.

What is the compression ratio of this piston set?

This set of Wiseco pistons features a 9.8:1 compression ratio. This is an updated ratio designed for improved engine performance in demanding applications.

Are these pistons suitable for a street-driven car?

These pistons are part of Wiseco's Professional Series, designed and built for heavy to severe duty race builds. While they can be used in a street application, they are engineered for high-stress environments and may require other supporting modifications for optimal performance and longevity.

Wiseco Forged Piston Set 77.50mm Bore 9.8:1 CR KE259M775

Name: Wiseco BMW / Peugeot EP6 77.50mm Bore .50mm Oversize 9.8:1 CR Pistons - Set of 4
Brand: Wiseco
SKU: wiseco-wiseco-bmw-peugeot-ep6-77-50mm-bore-50mm-oversize-9-8-1-cr-pistons-set-of-t14-141381
Price: 622.99 USD
Availability: BackOrder

Wiseco BMW / Peugeot EP6 77.50mm Bore .50mm Oversize 9.8:1 CR Pistons - Set of 4

$622.99

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 piston set for BMW/Peugeot EP6 engines. 77.50mm bore, 9.8:1 CR. Built for severe duty race builds.

Key Features

Fits BMW / Peugeot EP6 engines.
Set includes 4 forged pistons with rings and pins.
77.50mm bore size, which is 0.50mm oversize.
9.8:1 compression ratio for improved performance.
Constructed from 2618 aluminum for high tensile strength.
Features ArmorGlide skirt coating for reduced friction and seizure resistance.

These pistons are designed for BMW and Peugeot EP6 engines. Please verify compatibility with your specific vehicle's engine code before purchase.

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Product Details

If you're rebuilding the engine in your BMW or Peugeot EP6, especially for a demanding race application, a solid set of forged pistons is key. These Wiseco pistons are built to handle the stress of heavy to severe duty use. They come in a 77.50mm bore size, which is .50mm larger than stock, and feature a 9.8:1 compression ratio, giving you a noticeable bump in performance.

Wiseco makes these pistons from 2618 aluminum right here in the USA, chosen for its improved tensile strength under high temperatures and pressures. They've got precision-machined ring grooves, anti-detonation features, and extra steps to ensure a good seal. Plus, the ArmorGlide skirt coating helps reduce friction and noise, while also resisting seizure. The fully machined crown and forced pin oiling are details that show these are made for serious performance builds.

This set includes four pistons, rings, and pins, ready for installation. Keep in mind these are not CARB approved and cannot be shipped to California. For the best results, always refer to the manufacturer's installation instructions and ensure all related engine components are in good condition before assembly.