What material are these Mahle pistons made from?

These Mahle MS pistons are forged from 2618 aluminum. This material is chosen for its high strength and ability to withstand the demanding conditions found in performance engines.

What is the compression height and why is it important?

The compression height on these pistons is 1.110 inches. This measurement is crucial as it determines the position of the piston crown relative to the crankshaft centerline, affecting valve clearance and overall engine timing.

Are these pistons compatible with all GM LS engines?

These pistons are specifically designed for GM LS engines with a 417 cubic inch displacement and a 103.505 inch bore. While they are for LS engines, precise fitment depends on the specific engine configuration and stroke.

Mahle MS GM LS Piston Set 930225575

Name: Mahle MS GM LS 417cid 103.505 Bore 1.110R CH 4.000 Stroke 6.125 Rod 0.927 Pin -25cc Piston Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-gm-ls-417cid-103-505-bore-1-110r-ch-4-000-stroke-6-125-rod-0-927--t14-627838
Price: 912.97 USD
Availability: BackOrder

Mahle MS GM LS 417cid 103.505 Bore 1.110R CH 4.000 Stroke 6.125 Rod 0.927 Pin -25cc Piston Set of 8

$912.97

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 GM LS forged piston set for 417cid engines. 103.505" bore, -25cc dish. Part# 930225575.

Key Features

Fits Chevrolet LS 417 cu in. engines.
Forged from 2618 aluminum for strength and durability.
103.505 inch bore size.
-25cc piston dish volume for a 9.3:1 compression ratio.
1.110 inch compression height.
4.000 inch stroke compatibility.

⚠️ 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

These Mahle MS forged pistons are built for GM LS engines, specifically designed for a 417 cubic inch displacement. They feature a 103.505 inch bore and a -25cc dish volume, which helps achieve a 9.3:1 compression ratio when paired with a 4.000 inch stroke crankshaft and a 6.125 inch connecting rod. The piston pin measures 0.927 inches, and each piston weighs in at 429 grams, indicating a well-built component ready for demanding use.

Crafted from 2618 aluminum, a material known for its strength and durability under high temperatures and pressures, these pistons are a solid choice for engine builds aiming for increased performance. The 1.110 inch compression height is a critical measurement that ensures proper piston-to-head clearance and valve timing within the engine assembly. This set includes eight pistons, providing a complete solution for a V8 engine rebuild.

When undertaking a performance engine build, using components like these Mahle forged pistons is key to achieving reliable power. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine builder's specifications and the manufacturer's installation instructions for proper assembly and tuning.