What is the compression ratio of this piston set?

This Mahle piston set features a 10.3:1 compression ratio. This is a common ratio for performance-oriented builds, offering a good balance between power and drivability.

Are these pistons compatible with all BMW Mini 1.6L engines?

These pistons are specified for BMW Mini 1.6L engines. However, engine configurations can vary. It is crucial to confirm the exact bore, stroke, and pin diameter requirements for your specific engine build before purchasing.

What does it mean that these pistons are not CARB approved?

Not being CARB (California Air Resources Board) approved means these parts do not meet California's emissions standards. Consequently, they cannot be legally shipped to or installed in California.

Mahle Forged Piston Set 930067351 - BMW Mini 1.6L

Name: Mahle MS Piston Set 07+ Mini 77.50mm Bore 85.8mm Stroke 138.2mm Rod 20mm Pin 1cc 10.3 CR Set of 4
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-07-mini-77-50mm-bore-85-8mm-stroke-138-2mm-rod-20mm-pi-t14-191460
Price: 860.19 USD
Availability: BackOrder

Mahle MS Piston Set 07+ Mini 77.50mm Bore 85.8mm Stroke 138.2mm Rod 20mm Pin 1cc 10.3 CR Set of 4

$860.19

On Backorder

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

Mahle forged piston set for BMW Mini 1.6L. Features a 77.50mm bore and 10.3 compression ratio for improved engine performance.

Key Features

Fits BMW Mini 1.6L engines.
Forged aluminum construction offers strength and light weight.
Features a 77.50mm bore and 10.3:1 compression ratio.
Includes a 20mm pin diameter for connecting rod compatibility.
Piston dish volume is -1cc.
Each piston weighs 273g for balanced rotating assembly.

This piston set is designed for BMW Mini 1.6L 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

Mahle's MS Piston Set is built with a 77.50mm bore and a 10.3 compression ratio, a solid choice for rebuilding or upgrading your BMW Mini's 1.6L engine. These pistons are designed with a 1cc dish volume and a 20mm pin diameter, ensuring they integrate properly with your existing or upgraded connecting rods and crankshaft. The 138.2mm rod length and 85.8mm stroke are key dimensions that determine how the piston moves within the cylinder, impacting overall engine displacement and performance characteristics.

Crafted from forged aluminum, these pistons offer a strong and lightweight solution for your engine's needs. Forging the aluminum makes it denser and more resistant to the extreme pressures and temperatures found in a performance engine, which is crucial for reliability. Each piston weighs in at 273g, contributing to a balanced rotating assembly when installed as a set of four. The 20mm pin size is a common standard, making it easier to pair with a wide range of connecting rods.

This set is intended for engine builds where performance and durability are key. 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 to ensure these pistons are the correct specification for your specific engine build and performance goals. Proper installation and balancing are critical for optimal performance and longevity.