What is included in this Mahle piston set?

This set includes four Mahle MS forged pistons, each with a 20mm wrist pin. These are designed for specific VW/Audi 1.8L Turbo engines.

What is the compression ratio of these pistons?

These pistons feature a -12.0cc dish volume, which results in an 8.5:1 compression ratio when installed in the specified VW/Audi 1.8L Turbo engines.

Can these pistons be shipped to California?

No, this piston set is not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle MS Piston Set 81.50mm Bore 930229009

Name: Mahle MS Piston Set VW 1.8T 81.50mm Bore 86.4mm Stroke 144mm Rod 20mm Pin -12cc 8.5 CR Set of 4
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-vw-1-8t-81-50mm-bore-86-4mm-stroke-144mm-rod-20mm-pin--t14-191442
Price: 708.36 USD
Availability: BackOrder

Mahle MS Piston Set VW 1.8T 81.50mm Bore 86.4mm Stroke 144mm Rod 20mm Pin -12cc 8.5 CR Set of 4

$708.36

On Backorder

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

Mahle MS Piston Set for VW/Audi 1.8T engines. Features 81.50mm bore and 8.5:1 compression ratio for improved performance.

Key Features

This product is a set of four Mahle MS forged pistons.
Designed for VW/Audi 1.8L Turbo EA111 engines.
Features an 81.50mm bore size.
Includes a -12.0cc dish volume, resulting in an 8.5:1 compression ratio.
Pistons are constructed from 4032 aluminum alloy.
Each piston weighs 294g.

This piston set is designed for VW/Audi 1.8L Turbo EA111 engines. Please verify compatibility with your specific vehicle model and year.

⚠️ 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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Product Details

This Mahle MS Piston Set includes four forged pistons designed for VW/Audi 1.8L Turbo EA111 engines. These pistons are built to handle the demands of a performance-oriented engine, featuring an 81.50mm bore and a 4032 aluminum alloy construction. The set is engineered with a -12.0cc dish volume, contributing to an 8.5:1 compression ratio, which is a notable increase over stock and suitable for modified engine builds.

Each piston measures 32.7mm from the center line to the top of the dish (CH) and is designed to work with an 86.4mm stroke and a 144mm connecting rod. The included wrist pin is 20mm in diameter. Weighing in at 294g per piston, these Mahle pistons offer a good balance of strength and weight for their application. The 4032 aluminum alloy is known for its strength and resistance to detonation, making it a solid choice for boosted applications where heat and pressure are significant factors.

When rebuilding or upgrading your VW/Audi 1.8T engine, these Mahle pistons are a key component for achieving higher performance levels. It's important to note that this piston set is not CARB approved and cannot be shipped to California. Always consult your engine builder or a qualified mechanic for specific installation requirements and compatibility with other engine components.