NAMURA NX-70051-C Standard Piston Kit 66.36MM 66.4MM

( Brand: Namura ), ( Manufacturer Part Number: NX-70051-C ), ( Part Type: Piston )

Review NAMURA Standard Bore Size 66.36mm Piston Kit For Ktm Exc 66.4mm fits SX SXS XC 250

Introducing the Namura NX-70051-C Standard Piston, specifically designed for KTM 250 SX, SXS, EXC, and XC motorcycles with a 66.4mm kit. This high-performance piston is engineered to deliver exceptional power and durability, ensuring optimal engine efficiency for your KTM machine.

The NX-70051-C piston boasts a diameter of 66.36mm and comes as a part of the standard piston kit. Each piston undergoes rigorous testing to ensure precision in dimensions, ensuring a perfect fit in your engine. The piston crown is designed with a dome shape that provides optimal combustion efficiency, while the skirt features a full-length rib design that enhances rigidity and durability.

The piston's ring grooves are precision-machined to accommodate the correct ring size and gap. This attention to detail ensures that the piston rings seal properly, reducing the risk of oil leakage and improving engine performance.

The NX-70051-C piston also features a top ring with a reinforced edge that provides added durability and reduces the risk of ring collapse during high engine loads. The piston pin is made from high-strength material and is precision-machined to fit perfectly in the piston.

The NX-70051-C Standard Piston from Namura is designed to provide superior performance and longevity for your KTM 250 SX, SXS, EXC, or XC motorcycle. By using this piston, you can expect improved power output, increased engine efficiency, and reduced wear and tear on your engine components.

In conclusion, the Namura NX-70051-C Standard Piston is a high-quality, precision-engineered component that is specifically designed for KTM 250 SX, SXS, EXC, and XC motorcycles with a 66.4mm kit. This piston offers exceptional power and durability, making it the perfect choice for riders who demand the best from their off-road machines.

Buying the Namura NX-70051-C standard piston for KTM 250 SX/SXS/EXC/XC models with a bore size of 66.36mm and a kit for 66.4mm kit has its advantages and disadvantages.

1. Improved Performance: A new piston can lead to improved engine performance, as it can be made of high-quality materials and designed to provide better compression and power.

2. Longer Engine Life: A new piston can help extend the life of the engine by reducing wear and tear on the old piston.

3. Better Fuel Efficiency: A well-designed piston can help improve fuel efficiency by optimizing the combustion process.

1. Cost: Replacing a piston can be an expensive proposition, especially if you choose to buy an aftermarket part like the Namura NX-70051-C.

2. Installation Complexity: Installing a new piston can be a complex and time-consuming process, requiring specialized tools and expertise.

3. Potential for Damage: There is a risk of damaging other engine components during the installation process, which could lead to additional repair costs.

The decision to buy the Namura NX-70051-C standard piston for your KTM 250 SX/SXS/EXC/XC model depends on your priorities and budget. If you value improved performance, longer engine life, and better fuel efficiency, then the investment in a new piston may be worthwhile. However, if you are concerned about the cost, installation complexity, and potential for damage, you may want to consider other options, such as regular maintenance or purchasing a used piston from a reputable source.

If you do decide to go ahead with the purchase of the Namura NX-70051-C standard piston, make sure to source it from a trusted supplier to ensure its quality and compatibility with your engine. Additionally, consider having it installed by a professional mechanic to minimize the risk of damage to other engine components.

Details:

Manufactured by Namura. Compatible with KTM model's below: 2003 250 SX. Piston skirts are Molybdenum Teflon coated to minimize resistance/wear and provide extended life. Kit is for standard bore size - 66.40mm.

Size C piston is 66.36mm. You can use the Ask a Question link near bottom of every listing. Kit Includes piston, rings, pin, clips you get exactly what is pictured. Made in Taiwan.

Piston dome is anodized for superior heat resistance and longer lifespan. Customer ordered wrong piston - kit is in like new condition, but has some writing on it see 2nd picture First picture stock photo as noted picture original box oil spots the inside.

part #: nx70051 prices

• $71.36-$97.71

specifications pistondon:

• for models: Sx, Sxs, Xc, 250
• for makes: Ktm
• brand: Namura
• mpn: Nx-70051-c
• part type: Piston

shipping pistondon:

• type: Fixed
• transit: 3-7 Days
• cost: $0.00
• class: Standard
• service: Standard

payments pistondon:

• wallet: Paypal
• credit card: Diners-club
• other

offer pistondon:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0
• started: July 21, 2025

seller pistondon:

• rating: 96.0%
• city: Suamico, Wisconsin
• # reviews: 7651

returns pistondon:

• policy: No Returns

general pistondon:

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

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