What is the compression ratio achieved with these pistons?

These Mahle pistons are designed to achieve a 10.7:1 compression ratio when used with a 4.250-inch stroke crankshaft and a 6.385-inch connecting rod in a standard deck height Big Block Chevy engine.

Are piston rings and wrist pins included with this set?

This set includes the eight pistons and the specified wrist pins. Piston rings are sold separately and must be chosen to match the bore size and application.

Can these pistons be shipped to California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle BBC Piston Set 4.530in Bore 10.7 CR 928965330

Name: Mahle MS Piston Set BBC 547ci 4.530in Bore 4.25in Stroke 6.385in Rod .990 Pin 13cc 10.7 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-bbc-547ci-4-530in-bore-4-25in-stroke-6-385in-rod-990-p-t14-191555
Price: 971.65 USD
Availability: BackOrder

Mahle MS Piston Set BBC 547ci 4.530in Bore 4.25in Stroke 6.385in Rod .990 Pin 13cc 10.7 CR Set of 8

$971.65

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 BBC 547ci engines. Features a 4.530in bore and 10.7:1 compression ratio.

Key Features

Fits Big Block Chevy 547ci (548cid) engines with a standard deck height.
Set includes eight forged 4032 aluminum pistons.
Features a 4.530-inch bore and 13cc dome volume.
Designed for a 4.250-inch stroke and 6.385-inch connecting rod.
Achieves a 10.7:1 compression ratio.
Utilizes a .990-inch wrist pin diameter.

This piston set is designed for Big Block Chevy 547 cubic inch (548cid) engines. Please verify compatibility with your specific engine build.

⚠️ 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

If you're building a high-performance Big Block Chevy engine, this Mahle MS Piston Set is a solid choice for your 547 cubic inch application. These pistons are designed for standard deck height blocks and are crafted from durable 4032 aluminum, known for its strength and resistance to expansion, which is crucial for high-stress performance engines. The set includes eight pistons, each featuring a 4.530-inch bore and a 13cc dome volume, contributing to a 10.7:1 compression ratio when paired with a 4.250-inch stroke crankshaft and a 6.385-inch connecting rod. The .990-inch pin diameter ensures a secure fit with your chosen connecting rods.

Mahle has engineered these pistons with performance and reliability in mind. The 4032 aluminum construction offers a good balance of strength and lighter weight compared to cast pistons, helping to reduce overall engine stress. The dome shape and volume are specifically calculated to achieve the 10.7:1 compression ratio, which is ideal for naturally aspirated or forced induction applications seeking a noticeable power increase without compromising too much on street drivability. Each piston weighs in at approximately 561 grams, keeping rotating mass manageable for better engine response.

This set is intended for custom engine builds where precise component matching is key. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions to ensure proper fitment and performance with your specific engine components, including rings and connecting rods, which are sold separately.