What is the compression ratio with these pistons?

These Mahle pistons feature a -9.6cc dish volume, which results in an 11.1:1 compression ratio when used with the appropriate cylinder heads and crankshaft for the 3.4L Porsche Cayman engine.

Are these pistons suitable for a stock engine rebuild?

While these are forged pistons designed for performance, they can be used in a stock engine rebuild if you are aiming for a higher compression ratio or increased durability. They are a well-built option from a reputable manufacturer.

What is the significance of the 'MS' designation?

The 'MS' designation from Mahle typically refers to their specific piston design, often indicating features optimized for strength and performance, such as their skirt coating or ring groove design, compared to other Mahle piston lines.

Mahle 3.4L Piston Set 197848980 - Porsche Cayman

Name: Mahle MS Piston Set Por Cayman 3.4L 96mm Bore 78mm Stk 144.98mm Rod 22mm Pin -9.6cc 11.1CR Set of 6
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-por-cayman-3-4l-96mm-bore-78mm-stk-144-98mm-rod-22mm-p-t14-224463
Price: 1105.11 USD
Availability: BackOrder

Mahle MS Piston Set Por Cayman 3.4L 96mm Bore 78mm Stk 144.98mm Rod 22mm Pin -9.6cc 11.1CR Set of 6

$1105.11

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 Porsche Cayman 3.4L. 96mm bore, 11.1:1 CR. Part# 197848980.

Key Features

Fits Porsche Cayman 3.4L engines.
Set of 6 forged pistons.
96mm bore size.
Designed for 78mm stroke crankshaft and 144.98mm connecting rod.
Features a 22mm piston pin diameter.
Achieves an 11.1:1 compression ratio with a -9.6cc dish volume.

This piston set is designed for the Porsche Cayman 3.4L engine. Please verify fitment with your specific vehicle's engine configuration.

⚠️ 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 is a set of six Mahle MS forged pistons specifically for the Porsche Cayman 3.4L engine. If you're rebuilding the top end of your Cayman and need reliable, well-built pistons that can handle the demands of a performance engine, this set is a solid option. Mahle is a well-known name in engine components, and these pistons are designed to meet the original specifications while offering improved durability for performance applications.

Each piston in this set features a 96mm bore and is designed to work with a 78mm stroke crankshaft and a 144.98mm connecting rod. The piston pin diameter is 22mm. With a dish volume of -9.6cc, these pistons achieve an 11.1:1 compression ratio, which is a common target for naturally aspirated performance builds, offering a good balance between power and drivability. The forged construction means these pistons are stronger and more resistant to detonation and heat than cast pistons, making them suitable for engines that see regular spirited driving or track use.

This set includes all six pistons needed for a complete engine rebuild. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures, especially when dealing with critical engine components like pistons.