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

Forged pistons are made by heating and hammering a solid block of aluminum, which makes them stronger and more resistant to detonation. Cast pistons are made by pouring molten aluminum into a mold, which is a less expensive process but results in a weaker piston.

What does 'not CARB approved' mean for this piston?

CARB (California Air Resources Board) approval means a part meets specific emissions standards for use in California. This piston is not CARB approved, so it cannot be legally shipped to or used in California.

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

This listing is for a single piston only. Rings, pins, and clips are typically sold separately and may be required for installation. Please check the manufacturer's specifications or consult with a parts specialist to ensure you have all necessary components for your rebuild.

JE Pistons Yamaha YZ250F/WR250F Piston 247939S

Name: JE Pistons Yamaha YZ250F/WR250F Piston Single
Brand: JE Pistons
SKU: je-pistons-je-pistons-yamaha-yz250f-wr250f-piston-single-t14-695251
Price: 349.99 USD
Availability: BackOrder

JE Pistons Yamaha YZ250F/WR250F Piston Single

$349.99

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 Yamaha YZ250F/WR250F.

Key Features

Fits Yamaha YZ250F and WR250F models.
Single forged piston from JE Pistons.
Constructed from strong, durable forged aluminum.
Designed for performance and reliability in demanding applications.
Part number 247939S.

This piston is designed for Yamaha YZ250F and WR250F models. It is not CARB approved and cannot be shipped to California.

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Product Details

This is a single forged piston from JE Pistons, designed for Yamaha YZ250F and WR250F models. JE Pistons are well-known in racing circles for their durable and high-performance engine components. This piston is built to handle the demands of performance riding and racing, offering a solid option for engine rebuilds or performance upgrades.

Forged pistons like this one are made from a solid block of aluminum that is heated and hammered into shape, making them inherently stronger and more resistant to detonation than cast pistons. This strength is crucial for engines that are pushed hard, whether on the track or on challenging trails. JE Pistons pays close attention to tolerances and design, ensuring this piston will fit right and perform reliably. When rebuilding or modifying your Yamaha's engine, a quality forged piston is a key component for improved durability and performance.

Please note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.