PRO-X 2637 Piston FT83-87 .070 1.75MM 69.75MM

( Brand: Pro-x ), ( Manufacturer Part Number: 2637 ), ( Engine Type: 2-stroke ), ( Type: Piston Kit ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Piston, Rings, Clips, Pin ), ( Cylinder Bore Diameter: 69.75 Mm ), ( Piston Diameter: .070 ), ( Country/region Of Manufacture: Japan )

Review PRO X Prox Piston Yamaha Oversize .070 Inch 1.75mm Fits 69.75mm Bore fits YZ250 YZ 250

Introducing the PRO-X 2637 piston, a high-performance upgrade for Yamaha YZ250 motorcycles manufactured between 1983 and 1987. This piston, specifically designed for the FT83-87 engine, is a must-have for riders seeking enhanced power, improved reliability, and superior engine performance.

The PRO-X 2637 piston is crafted from a forged 2618 alloy material, ensuring superior strength and durability. This material is well-known in the motorcycle industry for its ability to withstand the rigors of high-performance riding. The piston's crown is machined with a 1.75mm compression height and a 69.75mm piston length, making it an excellent choice for those who want to increase their engine's compression ratio and power output.

The piston's skirt is designed with a narrow profile to minimize friction and improve engine efficiency. The skirt's surface is also coated with a high-performance, low-friction skirt coating that helps to reduce wear and tear, ensuring a longer piston life.

The PRO-X 2637 piston also features a reinforced, ribbed design on the skirt and a raised piston pin boss, providing additional strength and rigidity. This design helps to reduce piston deflection, which can lead to engine damage and reduced performance.

The piston's top ring groove is designed with a 2mm wider ring groove than the OEM piston, allowing for the use of aftermarket rings that offer improved sealing and performance. The piston's pin bore is also chamfered for easy pin installation and removal.

In summary, the PRO-X 2637 piston is an excellent upgrade for Yamaha YZ250 motorcycles manufactured between 1983 and 1987. With its superior strength, improved efficiency, and enhanced power output, this piston is an essential investment for any serious off-road rider. Whether you're looking to improve your bike's performance or simply want to ensure its longevity, the PRO-X 2637 piston is the perfect choice.

The Pro-X 2637 piston is a aftermarket piston designed for Yamaha YZ250 models from the FT83-87 (070) era. Here are some potential pros and cons of buying this piston:

1. Enhanced Performance: The Pro-X 2637 piston is designed to provide improved power and torque, making it a popular choice among racers and performance enthusiasts.

2. Increased Durability: This piston is made from high-quality materials, which can help increase the lifespan of the engine and reduce the need for frequent replacements.

3. Customizable: The Pro-X 2637 piston is available in various sizes, allowing riders to customize their engines to suit their specific riding style and power requirements.

4. Easy Installation: The piston comes with all necessary hardware, making it a relatively simple installation process for experienced mechanics.

1. Cost: Aftermarket pistons can be more expensive than OEM (original equipment manufacturer) parts, which may be a deterrent for some riders.

2. Requires Expert Installation: Installing a new piston can be a complex process, and it is recommended to have the work done by a professional mechanic to ensure proper installation and prevent damage to the engine.

3. Potential for Engine Damage: Installing an aftermarket piston incorrectly or using the wrong size piston can result in serious engine damage, potentially costing more money in repairs than the cost of the piston itself.

The Pro-X 2637 piston can offer significant performance improvements and increased durability for Yamaha YZ250 models. However, it comes with a higher price tag and requires expert installation, making it a consideration for serious riders or racers. It's important to ensure that the correct size piston is used and that the installation is done by a qualified mechanic to prevent potential engine damage.

If you are a serious racer or performance enthusiast looking to maximize the potential of your Yamaha YZ250, the Pro-X 2637 piston could be a worthwhile investment. However, it's essential to carefully consider the cost, installation requirements, and potential risks before making a purchase. If you are unsure about the benefits of an aftermarket piston for your specific riding style or power requirements, it may be best to consult with a professional mechanic or experienced rider for advice.

Details:

No wrist pin or cir clips New.

part #: 2637 prices

• $14.99-$84.95

specifications pistondon:

• for models: Yz250, Yz, 250
• for makes: Yamaha
• brand: Pro-x
• mpn: 2637
• engine type: 2-stroke
• type: Piston Kit
• machine type: Off-road Motorcycle
• items included: Piston, Rings, Clips, Pin
• cylinder bore diameter: 69.75 Mm
• piston diameter: .070
• country/region of manufacture: Japan

offer pistondon:

• availability: In Stock
• started: June 29, 2025
• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True

shipping pistondon:

• service: USPS Ground Advantage
• carrier: USPS
• type: Fixed
• class: Standard
• cost: $7.00
• transit: 6-12 Days

general pistondon:

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

seller pistondon:

• # reviews: 7
• rating: 0.0%
• city: Belvidere, Illinois

payments pistondon:

• credit card: Mastercard
• other
• wallet: Paypal

returns pistondon:

• policy: No Returns

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