JE PISTONS 284668 Piston Kit 12.5 98MM

( Brand: Je Pistons ), ( Manufacturer Part Number: 284668 ), ( C.a.r.b. Notice: Not Legal For Sale Or Use In California ), ( Type: Piston Kit )

Review JE PISTONS 12.5 98mm Bore Piston Kit By Fits fits CRF450R

Introducing the JE Pistons 284668 12.5:98mm piston kit, designed specifically for the CRF450R. This high-performance piston kit is engineered to deliver superior power and reliability for off-road racers and enthusiasts.

The piston kit includes two forged pistons, each precision-machined from 2618-T6 aluminum alloy. The pistons feature a low-friction, hard-anodized skirt to minimize friction and reduce wear. The crown of the piston is machined with a dished shape and a compression height of 98mm to optimize combustion and increase power output. The piston also includes a revised pin boss design for improved pin retention.

The piston kit also includes a set of JE's patented Pro-Fit piston rings. These rings are made from nitrided chrome molybdenum alloy and are designed to provide maximum ring sealing and durability. The top ring is also designed with a chamfered edge to reduce the risk of scuffing during installation.

The piston kit includes JE's patented 3D-shaped piston pins, which are made from 4340 steel and are heat-treated for maximum strength. The pins are also shot-peened to increase fatigue life and reduce the risk of failure. The piston pin bore is precision-honed to ensure a perfect fit and maximum durability.

The piston kit is also designed to work with the stock CRF450R connecting rod. However, JE offers a range of connecting rod options for those seeking even more performance.

In summary, the JE Pistons 284668 12.5:98mm piston kit is a high-performance upgrade for the CRF450R. It features forged pistons made from high-strength aluminum alloy, patented Pro-Fit piston rings, and 3D-shaped piston pins. The piston kit is designed to provide superior power and reliability for off-road racers and enthusiasts.

Pros and Cons of Buying Je Pistons 284668 12.5 98mm Piston Kit for CRF450R

- Pro: This piston kit is designed to provide better combustion efficiency, leading to enhanced power and improved throttle response.

- Pro: The piston kit can help increase horsepower and torque, making your CRF450R more responsive and quicker.

- Pro: The piston kit is made using high-quality materials, ensuring longer piston and ring life.

- Pro: The piston design is optimized for the CRF450R's engine, reducing the risk of piston slap and other engine issues.

- Pro: The Je Pistons 284668 kit offers various options for piston dome sizes, allowing riders to customize their engine for specific riding styles or track conditions.

- Pro: The improved combustion efficiency of the piston kit can lead to better fuel economy, saving you money in the long run.

- Pro: The piston kit is designed for higher compression ratios, which can lead to better engine performance and more power.

- Con: A higher compression ratio may require the use of higher octane fuel.

- Con: The Je Pistons 284668 kit can be more expensive compared to stock pistons.

- Con: The cost of the piston kit does not include the cost of other necessary components like rings, gaskets, or engine break-in procedures.

- Con: Installing the piston kit requires significant expertise and experience in motorcycle engine rebuilding.

- Con: Improper installation could result in damage to the engine or other components.

The Je Pistons 284668 12.5 98mm piston kit for CRF450R offers several advantages, such as improved engine performance, enhanced durability, and customizability. However, it comes with potential drawbacks like increased cost, installation complexity, and the need for higher octane fuel. Ultimately, the decision to purchase this piston kit depends on your budget, riding style, and technical expertise. If you are confident in your abilities to install the kit and are willing to invest in the upgrade, it could significantly improve your CRF450R's performance. If not, you may want to consider other options or seek professional assistance.

Details:

Some items are made to order and can have longer lead times; check the shipping details for an estimate. This means that if a vehicle was not originally equipped with catalyst and all other emissions related controls were connected such as oxygen sensors are reconnected, then the part is considered Replacement Part. Competition or Racing Vehicle Parts that are used exclusively in competition on race only vehicles. Check the shipping calculator for estimated costs.

These parts do not require approval as long they are used on public highways. Full exhaust systems installed on vehicles that did not originally contain a catalyst and whereby the design allows re installation original function of any other emissions control related components are also considered replacement parts. It must be a competition vehicle and not used at any time on public highway. Replacement Parts that have the same function and affect on emissions as they are replacing.

EO number and will arrive with appropriate labels to indicate the approved status. Slip on mufflers in applications whereby the catalyst is not contained original muffler an example of a replacement part. The kit includes a 2mm oversized piston, offering improved power and efficiency for your CRF450R. Modified Parts that alter the emissions control related performance from original part they are replacing, These may have catalysts in them but perform differently equipment or require alteration elimination of other components such as oxygen sensors.

Ask a question at the bottom of. 284668: The Honda CRF450R Piston Kit features a high-performance piston with 98mm bore and 12.5:1 compression ratio, designed to enhance engine performance reliability. Labeling a product as being for Racing Only or Closed Course Competition is not sufficient it to be included under this classification. If the vehicle has a catalyst and installation of part does not remove catalyst, all other emissions related controls are reconnected, then this is considered replacement.

part #: 284668 price

• $329.99

specifications pistondon:

• for models: Crf450r
• brand: Je Pistons
• mpn: 284668
• c.a.r.b. notice: Not Legal For Sale Or Use In California
• type: Piston Kit

offer pistondon:

• availability: In Stock
• started: July 30, 2025
• quantity: 2
• sold: 0
• options: Ship-to-home

payments pistondon:

• credit card: Diners-club
• wallet: Google-pay
• other

seller pistondon:

• rating: 99.5%
• city: Lebec, California
• # reviews: 104324

returns pistondon:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New

shipping pistondon:

• cost: $0.00
• service: Standard
• type: Fixed
• transit: 5-10 Days
• class: Standard

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