What is the difference between a forged piston and a cast piston?

Forged pistons are made by heating and hammering a block of aluminum, which creates a stronger, more durable grain structure. Cast pistons are made by pouring molten aluminum into a mold. This makes forged pistons better suited for high-performance applications that experience higher pressures and temperatures.

What does the '-4.250' bore size mean?

The '-4.250' indicates the piston is designed for an engine cylinder that has been bored out to a diameter of 4.250 inches. This is a common size for performance engine builds that increase displacement.

What does the compression height (1.080 inches) affect?

The compression height is the distance from the wrist pin center to the top of the piston. This measurement is critical for determining the engine's compression ratio and ensuring proper piston-to-valve clearance within the cylinder head.

JE Pistons Forged Piston 370252S - Milwaukee 8

Name: JE Pistons MILWAUKEE 8 -4.250 / 1.080 Piston Single
Brand: JE Pistons
SKU: je-pistons-je-pistons-milwaukee-8-4-250-1-080-piston-single-t14-695798
Price: 299.99 USD
Availability: BackOrder

JE Pistons MILWAUKEE 8 -4.250 / 1.080 Piston Single

$299.99

On Backorder

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

JE Pistons forged piston for Milwaukee 8 engines. Part# 370252S.

Key Features

This is a single forged piston from JE Pistons.
Designed for Milwaukee 8 engines.
Features a bore size of -4.250 inches.
Has a compression height of 1.080 inches.
Forged construction offers improved strength and durability over cast pistons.
This piston is not CARB approved and cannot be shipped to California.

This piston is designed for Milwaukee 8 engines. Check manufacturer specifications to confirm compatibility with your specific engine build.

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Product Details

This is a single forged piston from JE Pistons, specifically made for Milwaukee 8 engines. It features a bore size of -4.250 inches and a compression height of 1.080 inches, designed to be a direct replacement or upgrade for your engine build. JE Pistons are well-known in the performance engine world for their robust construction and precision manufacturing, making them a solid choice when you need reliable components for your high-performance Milwaukee 8.

Forged pistons like this one are built from a solid block of aluminum that's heated and hammered into shape, which makes them significantly stronger and more durable than cast pistons. This strength is crucial for handling the increased pressures and temperatures found in performance applications. The specific dimensions mean it's intended for engines that have been bored out to 4.250 inches, and the 1.080-inch compression height is a key measurement for ensuring correct piston-to-valve clearance and compression ratio in your build. JE Pistons are a popular choice for builders who want to ensure their engine can handle demanding use.