1. Pistons, Rings & Piston Kits Products
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  3. WISECO ORWI-CO423517-ON

WISECO ORWI-CO423517-ON Pro Lite Piston Bike 68.5MM

fits model: Yz250. make: Yamaha. year: 1988–1991.

Orwi-co423517-on Wiseco 1988-1991 Yamaha Yz250 Dirt Bike Pro-lite Piston 68.5mm

( Brand: Wiseco ), ( Manufacturer Part Number: ORWI-CO423517-ON ), ( Part Type: Piston )

Review WISECO Yamaha Dirt Bike Pro lite Piston 68.5mm fits YZ250 1988–1991

Introducing the WiseCO ORWI-CO423517-ON Pro-Lite piston, an exceptional upgrade for the 1988-1991 Yamaha YZ250 bike enthusiasts. This piston is expertly engineered to deliver unparalleled performance, reliability, and power to your prized motorcycle.

The Pro-Lite piston boasts a 68.5mm bore size, meticulously crafted from high-quality forged aluminum alloy. The forged material ensures superior strength and durability, enabling the piston to withstand the rigors of high-performance riding. Additionally, the piston's design incorporates a state-of-the-art, low-friction coating. This coating ensures a smooth, efficient transfer of power between the piston and the engine, resulting in increased horsepower and torque.

The Pro-Lite piston's crown is profiled to provide optimal combustion chamber shape and volume, ensuring efficient fuel-air mixture ignition. The piston's skirt is designed with a precision-machined finish to minimize friction and wear, contributing to reduced engine temperatures and improved overall engine performance.

Moreover, the piston ring package includes a compression ring, an oil control ring, and a top ring. These rings are meticulously designed to provide optimal sealing, preventing oil leakage and ensuring proper combustion chamber pressure for maximum power output.

In conclusion, the WiseCO ORWI-CO423517-ON Pro-Lite piston is an outstanding upgrade for any 1988-1991 Yamaha YZ250 bike. Its superior strength, efficient design, and high-performance capabilities make it an excellent choice for riders seeking to enhance the power and reliability of their motorcycle.

The Wiseco WI-CO423517-ON Pro-Lite piston is a popular aftermarket option for the 1988-1991 Yamaha YZ250 bike. This piston is known for its lightweight design and high performance capabilities. Here are some pros and cons that can help you make an informed decision about purchasing this product:

Pros:

1. Lightweight: The Pro-Lite piston is designed to be lighter than the stock piston, which can help reduce rotating mass and improve engine response.

2. Increased Power: Many riders report increased power and improved throttle response after installing the Wiseco Pro-Lite piston.

3. Durability: Wiseco is known for its high-quality pistons and the Pro-Lite piston is no exception. It is designed to withstand the rigors of off-road riding.

4. Improved Compression: The Pro-Lite piston offers improved compression ratios, which can help increase horsepower and torque.

Cons:

1. Cost: The Wiseco Pro-Lite piston is more expensive than the stock piston.

2. Installation: Installing the Wiseco Pro-Lite piston requires some mechanical knowledge and experience. It is not a simple bolt-on upgrade.

3. Customization: The Pro-Lite piston may require some customization to fit properly in your engine. This may include modifying the crankshaft or cylinder head.

Ending Conclusion:

The Wiseco WI-CO423517-ON Pro-Lite piston is a high-performance aftermarket option for the 1988-1991 Yamaha YZ250 bike. It offers improved power, lightweight design, and durability. However, it comes with a higher cost, more complex installation process, and the need for potential customization.

Recommendation:

If you are looking for a high-performance upgrade for your Yamaha YZ250 and have the mechanical knowledge and experience to install it, the Wiseco Pro-Lite piston is an excellent option. However, if you are on a tight budget or prefer a simpler upgrade, you may want to consider other options. Ultimately, the decision is up to your personal preferences and riding style.

Details:

I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification. All Wiseco 2 cycle pistons are supplied with rings and cir clips. This is helpful if you are buying multiple items.

Only Wiseco replacement ring sets can be used on pistons. 1988 - 1991 Yamaha YZ250 Dirt Bike Wiseco Pro-Lite Piston 68.5mm: Compatibility: YZ250, Notes: Power Valve must be modified for .040 and larger, 1991 model is Ceramic - Composite, Size: 68.5mm. Wiseco 2 cycle pistons are not supplied with a wrist pin unless noted in the. Credit or Debit Card.

All Wiseco 4 cycle pistons come complete with rings, wrist pins and cir clips.

part #: orwico423517 price

  • $185.47

specifications pistondon:

  • for models: Yz250
  • for makes: Yamaha
  • for years: 1988-1991
  • brand: Wiseco
  • mpn: Orwi-co423517-on
  • part type: Piston

offer pistondon:

  • started: March 13, 2026
  • options: Ship-to-home
  • sold: 0
  • quantity: 6
  • availability: In Stock

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general pistondon:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
for models: yz250, for makes: yamaha, for years: 1988-1991, part type: piston,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 11172730880181891,

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  • Offer #1: $185.47 price + $0.00 shipping estimate = $185.47* total. Credit or Debit Card. Compatibility: 1988-1991 Yamaha YZ250.FREE SHIPPING

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