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

Forged pistons are made by shaping aluminum at high temperatures, which aligns the grain structure of the metal. This process results in a much stronger and more durable piston that can withstand higher combustion pressures and temperatures compared to cast pistons.

Does this piston come with rings, pins, and clips?

This JE Pistons part number 379938S is for a single piston only. Rings, wrist pins, and clips are typically sold separately and may need to be purchased in addition to this piston for a complete installation.

What kind of tuning is needed with a 13.5:1 compression piston?

Increasing compression ratio often requires adjustments to engine tuning, such as fuel mapping and ignition timing, to optimize performance and prevent detonation. It's recommended to consult a professional tuner or refer to JE Pistons' specific recommendations for this piston.

JE Pistons Forged Piston 379938S - Kawasaki KX 450F

Name: JE Pistons 2021 Kawasaki KX 450F - 96MM/13.5 to 1 Piston Single
Brand: JE Pistons
SKU: je-pistons-je-pistons-2021-kawasaki-kx-450f-96mm-13-5-to-1-piston-single-t14-695839
Price: 329.99 USD
Availability: BackOrder

JE Pistons 2021 Kawasaki KX 450F - 96MM/13.5 to 1 Piston Single

$329.99

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 2021 Kawasaki KX 450F. 96mm bore, 13.5:1 compression ratio.

Key Features

Fits 2021 Kawasaki KX 450F.
Forged aluminum construction offers improved strength and durability over cast pistons.
Features a 96mm bore size.
Includes a 13.5:1 compression ratio for increased power output.
Designed as a single piston replacement.

This piston is specifically designed for the 2021 Kawasaki KX 450F model. Please verify compatibility with your specific vehicle before purchase.

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Product Details

This JE Pistons forged piston is built for the 2021 Kawasaki KX 450F, featuring a 96mm bore and a 13.5:1 compression ratio. Forged pistons are a strong choice for performance builds because they are significantly more durable and resistant to heat and stress than cast pistons. This makes them ideal for engines that see hard use or are modified for increased power.

JE Pistons uses advanced forging techniques to create pistons that are both lightweight and incredibly strong. This particular piston is designed to be a direct replacement for the stock unit, ensuring it fits right and works with your existing engine components. The 13.5:1 compression ratio is an updated spec over stock, which can help increase horsepower and throttle response when paired with appropriate tuning and fuel.

When rebuilding or upgrading your Kawasaki's engine, choosing a well-built piston like this JE Pistons unit is crucial for reliability and performance. Make sure to consult your service manual for proper installation procedures and any other components you might need for a complete engine overhaul.