What is the advantage of a forged piston over a cast piston?

Forged pistons are made by heating aluminum alloy and forcing it into shape under extreme pressure. This process creates a stronger, more durable grain structure compared to cast pistons, allowing them to withstand higher cylinder pressures and temperatures common in performance or modified engines.

How does the -13.5cc dish affect engine compression?

The dish in the piston displaces volume within the combustion chamber. A -13.5cc dish will reduce the overall compression ratio compared to a flat-top or domed piston. This is a critical specification for tuning your engine's performance, especially when dealing with forced induction or specific camshaft profiles.

Can this piston be shipped to California?

No, this piston is not CARB approved and cannot be shipped to California due to emissions regulations.

Wiseco Forged Piston KE315M84 - BMW M50 B25

Name: Wiseco BMW M50 B25 -13.5cc 84mm SINGLE PISTON
Brand: Wiseco
SKU: wiseco-wiseco-bmw-m50-b25-13-5cc-84mm-single-piston-t14-862354
Price: 1144.74 USD
Availability: BackOrder

Wiseco BMW M50 B25 -13.5cc 84mm SINGLE PISTON

$1144.74

On Backorder

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

Wiseco forged piston for BMW M50 B25 engines. Features -13.5cc dish and 84mm bore.

Key Features

This is a single forged piston for BMW M50 B25 engines.
Features a -13.5cc dish volume.
Has a bore size of 84mm.
Forged construction offers improved strength and durability over cast pistons.
Sold individually, so order the quantity needed for your engine.

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Product Details

This Wiseco forged piston is built with a -13.5cc dish and an 84mm bore, specifically designed for BMW M50 B25 engines. Forged pistons are a significant upgrade over cast or hypereutectic pistons, offering superior strength and durability. This makes them ideal for builds that demand more from the engine, whether it's higher compression, forced induction, or just a more robust naturally aspirated setup. The material choice and manufacturing process mean these pistons can handle increased cylinder pressures and temperatures without deforming or failing.

Wiseco uses high-strength aluminum alloys and advanced forging techniques to create pistons that are both lightweight and incredibly strong. This specific piston features a -13.5cc dish, which is a key factor in determining the final compression ratio of your engine. When paired with the correct cylinder head and gasket thickness, it allows for precise tuning of your engine's performance characteristics. The 84mm bore size is critical for ensuring a proper fit within the cylinder, and it's important to match this with the correct cylinder bore in your engine block. Proper installation, including correct ring gap and piston-to-wall clearance, is essential for optimal performance and longevity.

This piston is sold individually, so be sure to order the correct quantity for your engine. It's recommended to consult with your engine builder or a trusted mechanic to ensure this piston is the right choice for your specific build goals. Please note that this part is not CARB approved and cannot be shipped to California.