What is the benefit of a 12.5:1 compression ratio?

A 12.5:1 compression ratio means the air-fuel mixture is compressed more before ignition. This generally leads to more power and improved efficiency compared to lower compression ratios, but requires proper fuel and tuning to avoid issues like detonation.

Is this piston a direct replacement for all Honda CRF 450 models?

This piston is designed for Honda CRF 450 models, but it's important to confirm compatibility with your specific year and engine configuration. Always refer to your service manual or consult with a professional to ensure it's the correct part for your rebuild.

What else might I need when installing this piston?

When installing a new piston, it's recommended to also replace piston rings, wrist pin, and potentially bearings. A proper cylinder hone and inspection of the cylinder wall are also crucial for optimal performance and longevity.

JE Pistons 274758S Forged Piston - Honda CRF 450

Name: JE Pistons Honda CRF 450 12.5 to 1 Piston Single
Brand: JE Pistons
SKU: je-pistons-je-pistons-honda-crf-450-12-5-to-1-piston-single-t14-695388
Price: 349.99 USD
Availability: BackOrder

JE Pistons Honda CRF 450 12.5 to 1 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 274758S forged piston for Honda CRF 450. Features a 12.5:1 compression ratio for improved power.

Key Features

Forged aluminum alloy construction for strength and durability.
12.5 to 1 compression ratio for increased engine power.
Designed for Honda CRF 450 models.
Single piston unit for engine rebuilds or performance upgrades.
Not CARB approved; cannot ship to California.

This piston is designed for Honda CRF 450 models. Please verify compatibility with your specific vehicle's engine configuration.

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Product Details

Forged from high-strength aluminum alloy, this JE Pistons 274758S piston is built for demanding performance in your Honda CRF 450. It features a 12.5 to 1 compression ratio, which is a notable increase over stock, designed to extract more power from your engine. This higher compression can lead to improved throttle response and overall performance, especially when paired with appropriate tuning.

JE Pistons are well-known for their robust construction and precision manufacturing. This piston is designed to handle the increased cylinder pressures that come with a higher compression ratio, offering a solid option for riders looking to boost their engine's output. While this piston is a single unit, it's a critical component for anyone rebuilding or modifying their CRF 450's engine for enhanced performance.

Please note that this piston is not CARB approved and cannot be shipped to California. Always consult your vehicle's service manual for specific installation procedures and recommended tuning adjustments when increasing compression ratio.