PRO X 4420A Piston Kit 66.34MM

( Brand: Pro X ), ( Manufacturer Part Number: 4420A ), ( Type: Piston Kit ), ( Machine Type: Off-road Motorcycle ), ( Oe/oem Part Number: Off Road Motorcycle ), ( Piston Diameter: 66.34mm ), ( Country/region Of Manufacture: United States )

Review PRO X Honda Suzuki Motocross Piston Kit 66.34mm fits CR250R RM250 1986–1996

The Pro 4420A piston kit is an excellent upgrade option for riders who own Honda CR250R motorcycles manufactured between 1986 and 1996. This piston kit is also compatible with Suzuki RM250 models from the same era. This piston kit is produced by Pro Circuit, a renowned name in the motorcycle aftermarket industry, known for its high-performance parts.

The Pro 4420A piston kit comes with two pistons, each designed to deliver superior power and efficiency. The pistons have a bore size of 66.34mm, which is a popular size for high-performance aftermarket pistons. The pistons are made from forged aluminum, ensuring superior strength and durability. The piston crowns are engineered to provide optimal combustion efficiency, resulting in increased power and torque.

The piston rings included in the kit are designed to provide a tight seal in the cylinder bore, ensuring optimal engine performance. The piston rings are made from high-quality materials that can withstand the rigors of high-performance riding. The ring gap is preset, making the installation process easier and more straightforward.

The Pro 4420A piston kit also includes a set of piston pins, which are made from high-strength steel. These pins are designed to provide a secure connection between the piston and the connecting rod, ensuring optimal engine performance and longevity.

Installing the Pro 4420A piston kit is a straightforward process, and the kit includes all the necessary hardware for installation. The kit also includes detailed instructions to make the installation process as easy as possible. Additionally, Pro Circuit offers technical support to help answer any questions that may arise during the installation process.

In conclusion, the Pro 4420A piston kit is an excellent upgrade option for Honda CR250R and Suzuki RM250 motorcycles manufactured between 1986 and 1996. This kit provides superior power and efficiency, making it an ideal choice for riders who want to get the most out of their motorcycle. The use of high-quality materials and precise engineering ensures that this piston kit delivers reliable performance and long-lasting durability.

1. Performance improvement: Installing a larger piston kit can increase power output and improve engine performance by allowing for a larger combustion chamber and higher compression ratio.

2. Customization: This piston kit can be an attractive option for riders who want to customize their vintage motocross bikes for better performance and power.

3. Durability: A larger piston kit can also lead to increased engine durability by reducing the stress on the engine caused by running with a smaller piston in a larger bore engine.

4. Cost-effective: Compared to buying a new motor or even a complete engine rebuild, installing a piston kit can be a more cost-effective solution for riders looking to improve their bike's performance.

1. Requires engine modification: Installing a larger piston kit will require significant engine modification, including machining the cylinder and head to accommodate the new piston size.

2. Risk of engine damage: Installing a larger piston kit without proper modification or with inadequate knowledge of engine specifications can result in engine damage, such as piston slap or even engine seizure.

3. Potential compatibility issues: It is essential to ensure that the piston kit is compatible with the specific make and model of the bike, and that all other related components, such as the crankshaft and connecting rods, are also up to the task of handling the increased power output.

4. Expensive: While the piston kit itself may be cost-effective compared to a complete engine rebuild, the cost of the necessary modifications and potential labor fees can add up and make the overall cost quite significant.

In conclusion, buying a 66.34mm piston kit for a Honda CR250R or Suzuki RM250 (model years 1986-1996) can offer significant performance improvements and increased engine durability. However, it also comes with the risks of engine damage if not installed correctly and the expense of necessary engine modifications. Before making a decision, it is essential to carefully consider the benefits, potential drawbacks, and compatibility issues to determine if this is the right choice for your vintage motocross bike.

If you are considering buying a 66.34mm piston kit for your vintage Honda CR250R or Suzuki RM250, I would strongly recommend consulting with a professional mechanic or engine builder to ensure that the kit is compatible with your specific bike model and that all necessary modifications are carried out correctly. Additionally, it is essential to ensure that you are purchasing the kit from a reputable source to minimize the risk of receiving a subpar product. Finally, make sure to weigh the potential benefits against the costs and risks before making a final decision.

Details:

This is a Standard bore size 66.34mm Pro X # 4420A Piston Kit. Cast from high-silicon alloy for maximum strength and dependability Pro X offers a complete range of popular piston model's years both trail racing applications All pistons are priced with rings. This kit has the piston, piston rings, wrist pin clips. 1986 1965 Honda CR250R CR250 1996 1997 Suzuki RM250 Motocross Bike Pro X # 4420A Piston Kit.

part #: 4420a price

• $122.60

specifications pistondon:

• for models: Cr250r, Rm250
• for makes: Honda, Suzuki
• for years: 1986-1996
• brand: Pro X
• mpn: 4420a
• type: Piston Kit
• machine type: Off-road Motorcycle
• oe/oem part number: Off Road Motorcycle
• piston diameter: 66.34mm
• country/region of manufacture: United States

offer pistondon:

• sold: 0
• availability: In Stock
• quantity: 1
• started: February 26, 2025
• best offers: True
• options: Ship-to-home

general pistondon:

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

shipping pistondon:

• type: Fixed
• class: Freight
• cost: $12.00
• service: Flat Rate Freight

returns pistondon:

• policy: No Returns

payments pistondon:

• credit card: Discover
• other
• wallet: Google-pay

seller pistondon:

• city: Bettendorf, Iowa
• rating: 98.2%
• # reviews: 57

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