WISECO ORWI-CO419391-ON Pro Lite Piston Bike 55MM

( Brand: Wiseco ), ( Manufacturer Part Number: ORWI-CO419391-ON ), ( Part Type: Piston )

Review WISECO Honda Dirt Bike Pro lite Piston 55mm fits CR125R 1986

The WISCO ORWI-CO419391-ON Pro-Lite Piston is a high-performance upgrade for the 1986 Honda CR125R bike. This piston, manufactured by WISCO, is designed to provide improved power and efficiency for off-road racing enthusiasts.

The Pro-Lite Piston is constructed from a forged aluminum alloy material, ensuring superior strength and durability. Its lightweight design reduces rotating mass, allowing for quicker acceleration and increased responsiveness. The piston's diameter measures 55mm, making it suitable for the CR125R's engine.

The piston features a flat-top design, allowing for a more efficient combustion process and increased power output. The piston skirt is designed with a full-skirted profile, minimizing the contact between the piston and the cylinder wall, reducing friction and wear.

The Pro-Lite Piston also includes a ring package consisting of a compression ring, oil control ring, and a skirt oil scraper ring. These rings are designed to optimize engine performance, ensuring efficient combustion and reduced engine wear.

This piston comes with a precision-machined piston pin and wrist pin boss, ensuring a perfect fit and smooth operation. It also features a 0.4mm piston ring gap, which is ideal for the CR125R engine.

The Pro-Lite Piston is an excellent choice for racers looking to gain a competitive edge on the track. Its lightweight design, improved power output, and enhanced durability make it an ideal upgrade for the 1986 Honda CR125R bike. Installation is straightforward, and the piston comes with all necessary hardware for a hassle-free installation process.

Wiseco PRO-LITE Piston for 1986 Honda CR125R: A Comprehensive Analysis

The Wiseco PRO-LITE piston, specifically the model number Wi-co or WI-CO419391-ON, is a popular aftermarket upgrade for the 1986 Honda CR125R bike. This piston is known for its lighter weight and enhanced performance. In this analysis, we will discuss the pros and cons of purchasing this piston.

1. Enhanced Performance: The lighter weight of the Wiseco PRO-LITE piston allows for improved engine performance by reducing rotating mass. This results in better power delivery and increased top-end speed.

2. Durability: Wiseco pistons are known for their durability. They are made from high-quality materials and are designed to withstand the rigors of off-road racing.

3. Customizable: The Wiseco PRO-LITE piston is available in various sizes to suit different applications and engine builds. This allows riders to fine-tune their engine to their specific needs.

4. Improved Compression: The piston design offers improved compression, which can lead to increased power output and better efficiency.

1. Cost: The Wiseco PRO-LITE piston is more expensive than the stock piston. This may be a deterrent for some riders who are working on a tight budget.

2. Installation: Installing the Wiseco piston requires some mechanical skills and experience. It may not be a suitable project for beginners or inexperienced riders.

3. Break-In Period: After installation, the piston requires a break-in period to ensure optimal performance and longevity. This can be a time-consuming process, and riders must follow the recommended procedure carefully to avoid damaging the piston.

The Wiseco PRO-LITE piston is a high-performance upgrade for the 1986 Honda CR125R. It offers improved power delivery, enhanced durability, and customizable options. However, it comes with a higher price tag and requires some mechanical expertise for installation. If you are an experienced rider looking to maximize the performance of your CR125R, the Wiseco PRO-LITE piston is an excellent choice. However, if you are on a tight budget or not comfortable with the installation process, you may want to consider other options.

If you are an experienced rider looking for a high-performance upgrade for your 1986 Honda CR125R, and you have the mechanical skills and budget for the Wiseco PRO-LITE piston, then this is an excellent choice. However, if you are unsure about the installation process or have a limited budget, you may want to consider other options, such as a performance air filter or exhaust system, which can offer significant improvements in power and performance at a lower cost.

Details:

Wiseco 2 cycle pistons are not supplied with a wrist pin unless noted in the. Parts without fitment are to be assumed universal and may require vehicle modification. Only Wiseco replacement ring sets can be used on pistons. I need to exchange an item.

1986 Honda CR125R Dirt Bike Wiseco Pro-Lite Piston 55mm: Compatibility: CR125R, Size: 55mm. This is helpful if you are buying multiple items. Credit or Debit Card. All Wiseco 4 cycle pistons come complete with rings, wrist pins and cir clips.

All Wiseco 2 cycle pistons are supplied with rings and cir clips.

part #: orwico419391 price

• $142.99

specifications pistondon:

• for models: Cr125r
• for makes: Honda
• for years: 1986
• brand: Wiseco
• mpn: Orwi-co419391-on
• part type: Piston

seller pistondon:

• city: Indiana, US
• # reviews: 84966
• rating: 99.9%

payments pistondon:

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

returns pistondon:

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

offer pistondon:

• quantity: 2
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: May 9, 2026

general pistondon:

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

shipping pistondon:

• transit: 4-5 Days
• cost: $0.00
• service: Standard
• type: Fixed
• class: Standard

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