What is the compression ratio with these pistons?

These Mahle pistons feature a 36.2cc dish volume, which results in an 11.4:1 compression ratio when installed in the appropriate Porsche 964 or 993 engine configuration.

Are these pistons suitable for a stock engine rebuild?

Yes, these pistons are designed to be a direct replacement for stock pistons in Porsche 964 and 993 models. Their forged construction offers improved strength for enhanced durability, even in a stock rebuild.

What does 'Not CARB approved' mean for shipping?

This means the piston set does not meet California Air Resources Board (CARB) emissions standards. Consequently, it cannot be legally shipped to California addresses.

Mahle 964/993 Piston Set PP104-001N

Name: Mahle MS Piston Set Por 964/993 104mm Bore 76.4mm Stk 127mm Rod 23mm Pin 36.2cc 11.4CR Set of 6
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-por-964-993-104mm-bore-76-4mm-stk-127mm-rod-23mm-pin-3-t14-224484
Price: 2068.28 USD
Availability: BackOrder

Mahle MS Piston Set Por 964/993 104mm Bore 76.4mm Stk 127mm Rod 23mm Pin 36.2cc 11.4CR Set of 6

$2068.28

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 Porsche 964/993. 104mm bore, 11.4:1 CR. Set of 6.

Key Features

Fits Porsche 964 and 993 models.
Set includes six forged pistons.
Features a 104mm bore and 76.4mm stroke.
Designed for use with 127mm rods and 23mm wrist pins.
Each piston has a 36.2cc dish volume.
Achieves an 11.4:1 compression ratio.

This piston set is specifically designed for Porsche 964 and 993 models. Please verify compatibility 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 Mahle MS Piston Set designed for Porsche 964 and 993 models. It features a 104mm bore, a 76.4mm stroke, and is intended for use with a 127mm rod and a 23mm pin. The set includes six pistons, each with a 36.2cc dish volume, resulting in an 11.4:1 compression ratio. These pistons are a significant upgrade for rebuilding or enhancing the engine in these iconic Porsche vehicles.

Mahle is well-known for its engine components, and this piston set is built to meet the demands of performance-oriented applications. The forged construction offers improved strength and durability compared to cast pistons, making them suitable for higher performance engines. The specific dimensions, including the 104mm bore and the 11.4:1 compression ratio, are carefully engineered to optimize power output and efficiency for the 964 and 993 platforms. This set is designed as a direct replacement for the original pistons, simplifying the installation process for a qualified mechanic.

When undertaking an engine rebuild or performance enhancement on your Porsche 964 or 993, using high-quality internal components is crucial. This Mahle piston set provides the strength and precision needed for reliable performance. Please note that this part is not CARB approved and cannot be shipped to California. It is also subject to California Proposition 65 warnings.