WISECO ORWI-CO423101-ON Pro Lite Piston Bike 67.5MM

( Brand: Wiseco ), ( Manufacturer Part Number: ORWI-CO423101-ON ), ( Part Type: Piston )

Review WISECO Ktm Exc Dirt Bike Pro lite Piston 67.5mm fits 250 1990–1994

Introducing the WISCO ORWI-CO423101-ON Pro-Lite Piston, a high-performance upgrade for your 1990-1994 KTM 250 EXC bike. This piston, manufactured by WISCO, is specifically designed to provide enhanced power and durability for off-road motorcycling enthusiasts.

The Pro-Lite Piston boasts a 67.5mm bore size, making it a suitable replacement for the original equipment on your KTM 250 EXC. The piston is crafted from a forged aluminum alloy, ensuring both strength and lightweight properties. This material selection not only reduces the overall weight of the piston but also increases its resistance to fatigue and engine heat.

The piston features a DLC (Diamond-Like Carbon) coated piston skirt. This coating is known for its exceptional wear resistance, enabling the piston to withstand prolonged usage and harsh off-road conditions. Furthermore, the DLC coating minimizes friction between the piston and the engine cylinder, resulting in improved engine efficiency and reduced power loss.

The Pro-Lite Piston's crown design includes an optimized shape for efficient combustion, resulting in increased power output. The piston also comes with a ring package consisting of a compression ring, a ring groove seal, and an oil control ring. These rings are designed to provide optimal sealing and engine performance.

The piston pin is made from high-strength steel and is precision machined to ensure a perfect fit in the piston. It also comes with an O-ring for improved sealing and durability.

The Pro-Lite Piston from WISCO is a direct replacement for your OEM piston, making installation straightforward. If you're looking to boost your KTM 250 EXC's power output and improve its overall performance, this piston is an excellent upgrade choice.

Pros and Cons of Buying Wiseco WI-CO423101-ON Pro-Lite Piston for 1990-1994 KTM 250 EXC Bikes

The Wiseco WI-CO423101-ON Pro-Lite Piston is a popular aftermarket upgrade for the 1990-1994 KTM 250 EXC bikes. This piston is known for its high-performance features, but like any aftermarket part, it comes with its advantages and disadvantages. In this article, we will discuss the pros and cons of purchasing this piston.

1. Enhanced Power: The Pro-Lite piston is designed to provide increased power and torque, making it an ideal choice for racers and riders seeking improved performance.

2. Lightweight: The piston is lighter than the stock piston, reducing the overall weight of the engine and improving the bike's agility and responsiveness.

3. Durability: Wiseco pistons are known for their durability and strength, allowing riders to push their bikes harder and longer without worrying about engine failure.

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

1. Cost: The Wiseco Pro-Lite piston is more expensive than the stock piston, which can be a significant investment for some riders.

2. Installation: Installing the piston requires a high level of technical expertise, and some riders may prefer to pay a professional to do the job.

3. Clearance Issues: The Pro-Lite piston may require clearance modifications to fit properly, which can add to the installation cost and complexity.

4. Noise Level: Some riders have reported an increase in engine noise after installing the Pro-Lite piston, which may not be desirable for everyone.

The Wiseco WI-CO423101-ON Pro-Lite Piston offers several advantages for riders of 1990-1994 KTM 250 EXC bikes, including enhanced power, lightweight design, durability, and improved compression. However, the piston comes with some disadvantages, such as a higher cost, installation complexities, clearance issues, and increased noise level. Ultimately, the decision to purchase the Pro-Lite piston depends on the rider's budget, technical expertise, and desired performance level.

If you are a serious racer or a rider seeking maximum performance from your 1990-1994 KTM 250 EXC bike, the Wiseco WI-CO423101-ON Pro-Lite Piston is an excellent investment. However, if you are a casual rider or have a limited budget, the stock piston may be sufficient for your needs. In all cases, it is recommended to consult with a professional mechanic before making a purchase or installation to ensure a successful outcome.

Details:

I need to exchange an item. This is helpful if you are buying multiple items. 1990 1994 KTM 250 EXC Dirt Bike Wiseco Pro-Lite Piston 67.5mm: Compatibility: EXC, Size: 67.5mm. Parts without fitment are to be assumed universal and may require vehicle modification.

Wiseco 2 cycle pistons are not supplied with a wrist pin unless noted in the. All Wiseco 2 cycle pistons are supplied with rings and cir clips. All Wiseco 4 cycle pistons come complete with rings, wrist pins and cir clips. Credit or Debit Card.

Only Wiseco replacement ring sets can be used on pistons.

part #: orwico423101 price

• $189.99

specifications pistondon:

• for models: 250
• for makes: Ktm
• for years: 1990-1994
• brand: Wiseco
• mpn: Orwi-co423101-on
• part type: Piston

offer pistondon:

• sold: 0
• started: November 6, 2025
• quantity: 2
• availability: In Stock
• options: Ship-to-home

returns pistondon:

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

payments pistondon:

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

seller pistondon:

• rating: 99.7%
• city: Indiana, US
• # reviews: 69450

shipping pistondon:

• class: Standard
• type: Fixed
• cost: $0.00
• service: Standard
• transit: 2-6 Days

general pistondon:

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

Wiseco ORWI-CO423101 Is Similar To:

• Honda 12100-ml3-870 1988 Cr500 Cr 500 Cylinder Jug Wiseco Piston Top End Gaskets (17.7% similar) New Wiseco piston kit complete with rings, wrist pin and cir-clips. New top end gaskets kit. 1988 Honda CR500 cylinder jug Wiseco piston top end gaskets, kit includes-, factory oem cylinder bored to new piston. Ready to install kit...(May 19th, 2024)
• Wiseco 2165cd 1985 85 Honda Cr125r Cr 125r 125 Piston Rings 55mm (42.3% similar) For sale is the piston rings 55MM that was removed from a 1985 Honda CR125R. The condition of this item is displayed in the pictures above. I do my best to describe the condition of parts in and pictures...(May 21st, 2024)
• Wiseco 4393p2 Piston And Rings Honda Atc Trx 350 85-89 43934p2 4393m0 (28.6% similar) The set includes Wiseco renowned 4393P2 model piston and rings, ensuring that your engine runs smoothly efficiently. Otherwise the piston and rings are almost like new. This Wiseco piston and ring set is an excellent choice for Honda ACT TRX 350 model's manufactured between 1985 1989 ...(May 24th, 2024)
• Wiseco 645m04750 Like New Pro-lite Piston Stock 47.5mm Bore For Suzuki Rm80 1991-2001 (45.4% similar) 2 wrist pin cir clips. This Wiseco kit contains the needed components to replace one piston. Wiseco individual piston kit. Includes: 1 Wiseco piston. Wiseco participates in nearly every form of racing including supergrass, motocross, GCC, orcs, moot GP, super bike, NRA pro stock...(May 30th, 2024)
• Wiseco 40144m07800 Piston Kit Standard 78 Mm 40144m07800 (35.6% similar) Wiseco piston kit standard 78MM 40144M078 gas / Husqvarna ktm see below for compatible machines, kit is in good condition. Pictures show most significant blemishes but not every blemish. See pictures for details fully functional no bends cracks or defects. Piston kit includes piston...(June 1st, 2024)
• Wiseco 40082m09600 Piston Kit Standard Bore 95.95mm 12.5 1 Compression (34.7% similar) Used piston has about 4 hours on it. Good condition with wrist pin and cir clips rings...(June 10th, 2024)
• Wiseco 806m04800 Like New Piston Kit Pro-lite For Husqvarna Kawasaki Suzuki And Yamaha (32.9% similar) Now you can own the same race parts as all top teams. Service intervals may be increased with racers choice pistons over conventional Wiseco pistons, and are for expert racers tuners only. Cylinder sleeves must be purchased separately. When blow-by starts to increase on other pistons and power...(June 12th, 2024)
• Wiseco Pk1237 Motorcycle Piston Kit With Top-end Gasket (34.1% similar) Please review the pictures above carefully. Nothing else comes with this offer. Manufacturer - Wiseco, part number PK1237. Fits 04-05 Kawasaki KX250F, 04-06 Suzuki RMZ250. There is minor grease throughout and some parts have already been assembled. Missing: please see...(June 27th, 2024)
• Wiseco 526m06700 Honda Cr250 Atc250 Trx250 Piston (40.9% similar) Parts are listed for the year and model stated. See pictures. Item: Honda CR250 ATC250 TRX250 piston 526M067 condition: in very good condition...(June 28th, 2024)
• Wiseco 4875m05350 Top End Piston For Kawasaki Klx 110 02-12 53.50mm (34.5% similar) Wiseco top end piston for Kawasaki JLX 110 02-12 53.50MM 4875M05350...(July 2nd, 2024)
• Wiseco 822m05400 Like New Pro Lite Piston Kit 54.00mm For Kawasaki Kx125 2003 (42.6% similar) Compression ratio: standard. Bore size: 54MM. Piston kit includes piston, rings, wrist pin and cir clips. Fits the following model's: Kawasaki KX125 2003 . Lightweight forging for instant throttle response and maximum torque. Specs: oversize: standard. Computer engineered piston skirt...(July 10th, 2024)