1. USED Engine Parts Deals
  2. sku: 7524330244878693
  3. NAMURA NA-10027-4K

NAMURA NA-10027-4K Top End Repair Kit 1.00MM 69.45MM

fits model: Trx250. make: Honda.

Na-10027-4k Namura Top End Repair Kit 1.00mm 69.45mm #na-10027-4k Fits Honda Trx250

( Brand: Namura ), ( Manufacturer Part Number: NA-10027-4K ), ( Warranty Details: See Manufacturer )

Review NAMURA Top End Repair Kit 1.00mm 69.45mm #na-10027-4k Honda fits TRX250

The Namura NA-10027-4K Top End Repair Kit is specifically designed for the Honda TRX250 quad bike model. This repair kit is an essential tool for any motorcycle enthusiast or mechanic who wants to keep their TRX250 in top condition.

The kit includes all the necessary components to repair and replace the worn-out parts on the TRX250's top end. The highlight of this repair kit is the set of 1.0mm shims, which are crucial for adjusting the clearance between the piston and the cylinder wall for optimal engine performance. The shims come in a precise size of 69.45mm, ensuring a perfect fit for the Honda TRX250 engine.

Furthermore, the repair kit also includes other essential components such as new piston rings, cylinder head gasket, valve seal kit, and camshaft oil seals. These parts are designed to provide a snug fit and ensure a secure seal, preventing oil leaks and ensuring the engine runs smoothly.

The piston rings in this repair kit are made of high-quality materials that provide excellent sealing properties, ensuring that the engine's compression is not lost through the piston rings. The cylinder head gasket is also made of premium material, ensuring a tight seal between the cylinder head and the engine block.

The valve seal kit in the repair kit includes new seals for the engine's intake and exhaust valves. These seals are designed to prevent oil from leaking into the combustion chamber, ensuring proper engine function and reducing oil consumption.

Finally, the camshaft oil seals in this repair kit are designed to prevent oil from leaking out of the camshaft tube, maintaining the engine's lubrication system and ensuring the engine runs smoothly.

In summary, the Namura NA-10027-4K Top End Repair Kit is an essential tool for any Honda TRX250 owner or mechanic. It includes all the necessary components to repair and replace the worn-out parts on the TRX250's top end, ensuring optimal engine performance and longevity. The kit's precision-engineered components are designed to provide a snug fit and ensure a secure seal, preventing oil leaks and reducing maintenance costs in the long run.

The Namura NA-10027-4K Top End Repair Kit for Honda TRX250 is a popular choice among motorcycle enthusiasts for fixing and upgrading their engines. Here are some pros and cons to help you make an informed decision about purchasing this repair kit:

Pros:

1. High-Quality Components: The kit includes high-performance piston rings, pistons, and other top-end parts that can help improve engine performance and longevity.

2. Easy Installation: The repair kit comes with clear instructions and pre-gapped piston rings, making the installation process relatively straightforward.

3. Cost-Effective: This repair kit is often less expensive than having the work done at a professional shop, especially for those who are mechanically inclined.

4. OEM Compatibility: The parts in this kit are designed to be compatible with Honda TRX250 engines, ensuring a proper fit and function.

5. Upgrade Potential: The high-performance components in this kit can be used as an upgrade for stock engines, allowing riders to boost power and torque.

Cons:

1. Requires Skill: Installing the top end of an engine can be a complex and time-consuming process, especially for those without mechanical experience.

2. Additional Tools Required: To install the repair kit, you may need to purchase additional tools, such as a crankshaft puller or piston ring compressor.

3. Potential for Error: Installing the piston rings improperly can lead to engine damage or poor performance, which could outweigh the benefits of the repair kit.

4. Limited Warranty: The repair kit comes with a limited warranty, which may not cover all potential issues or damages.

Conclusion:

The Namura NA-10027-4K Top End Repair Kit for Honda TRX250 offers several advantages for those looking to upgrade or repair their engine. However, it requires a certain level of mechanical skill and the installation process can be complex. If you are confident in your abilities and have the necessary tools, this repair kit can be a cost-effective and high-quality solution for improving your Honda TRX250's engine performance. If you lack experience or tools, it may be worth considering having the work done by a professional. Ultimately, the decision to purchase this repair kit depends on your individual circumstances and comfort level with engine repair work.

part # na100274k prices

  • $85.17-$108.86

specifications atvsienna:

  • for models: Trx250
  • for makes: Honda
  • brand: Namura
  • manufacturer part number: NA-10027-4K
  • warranty details: See Manufacturer

shipping atvsienna:

  • type: Fixed
  • service: UPS Ground
  • carrier: UPS
  • transit: 4-7 Days
  • class: Standard
  • cost: $0.00

seller atvsienna:

  • rating: 99.3%
  • # reviews: 619766

returns atvsienna:

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

general atvsienna:

  • condition: New
  • ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts

payments atvsienna:

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

offer atvsienna:

  • sold: 0
  • started: July 19, 2025
  • options: Ship-to-home
  • quantity: 2
  • availability: In Stock
for models: trx250, for makes: honda, warranty details: see manufacturer,
category: atv parts > atv, side-by-side utv parts accessories > engines engine parts > engine parts, sku: 7524330244878693,

Namura NA-10027-4K Is Similar To:

atvsienna logo
5 offers $85.17–$108.86 USD
  • Offer #1: $85.17 price + free delivery = $85.17* total. With the Namura complete Top-End Rebuild Kit, rebuilding your Top-End no longer expensive and painful. Namura gives you a higher performance piston without the higher price.FREE SHIPPING
  • Offer #2: $108.86 price + free delivery = $108.86* total. Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Namura Piston Kit 1.00mm Oversize to 69.45mm.FREE SHIPPING
  • Offer #3: $95.99 price + free delivery = $95.99* total. Genuine Namura Products Reflects combustion heat and reduces carbon buildup, protecting the top of the piston.FREE SHIPPING
  • Offer #4: $92.41 price + free delivery = $92.41* total. Machined Smooth Heads Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures.FREE SHIPPING
  • Offer #5: $92.74 price + free delivery = $92.74* total. Piston Size: 69.45 mm Namura Top-End Rebuild Kit.FREE SHIPPING