NAMURA NA-10003-2 Piston Comp M-002 0.5

( Brand: Namura ), ( Manufacturer Part Number: NA-10003-2 ), ( Part Type: Piston ), ( Vendor: Lionparts Powersports ), ( Image Note: Image Is For Reference Only, Actual Product May Vary Slightly. ), ( Ships From: Usa ), ( Handling Time: Approximately 2 Business Days ), ( Oem Or Performance: Performance/aftermarket )

Review NAMURA Piston For Honda 0.5 Bore Hi comp fits SPORTRAX TRX400EX 1999–2008

Introducing the Namura NA-10003-2 M-002 piston, an excellent replacement option for the piston on Honda TRX400EX Sportrax models produced between 1999 and 2008. This piston is specifically designed for engines equipped with a 0.5 Hi-Comp cylinder head.

The Namura piston is meticulously crafted using high-grade aluminum alloy, ensuring both durability and lightweight performance. The piston crown is engineered to provide optimal combustion efficiency, enhancing the power output and responsiveness of your ATV. The piston skirt is designed to minimize friction with the cylinder bore, reducing wear and tear over time and improving overall engine performance.

The piston ring grooves are precisely machined to accommodate top-quality piston rings, ensuring a proper seal and preventing the loss of compression and power. The piston pin bore is designed to accept a standard 16mm piston pin, making it a direct fit for most Honda TRX400EX Sportrax applications.

This piston is also compatible with stock connecting rods and crankshafts, allowing for a simple and cost-effective upgrade. It is important to note that when installing a new piston, other components such as the connecting rod, piston ring set, and crankshaft may also require replacement to ensure optimal performance.

The Namura NA-10003-2 M-002 piston is an excellent choice for those seeking to improve their ATV's power output and reliability. Its high-quality materials and precise engineering make it a top choice among ATV enthusiasts and mechanics. With this piston, you can trust that your Honda TRX400EX Sportrax will continue to perform at its best, whether you're tackling tough trails or just cruising around the farm.

Piston Replacement for Honda TRX400EX Sportrax (1999-2008) - Comparing Namura NA-1003-2 M-002 0.5 Hi-Comp Piston

The Honda TRX400EX Sportrax (1999-2008) is a popular model of all-terrain vehicle (ATV). Over time, the piston may wear out and need replacement. In this analysis, we will compare the Namura NA-1003-2 M-002 0.5 Hi-Comp piston as a potential replacement option.

1. Enhanced Performance: The 0.5 Hi-Comp design offers improved combustion efficiency and power output, making the engine more responsive and delivering better overall performance.

2. Durability: Namura pistons are known for their high-quality materials and precise engineering, ensuring a long service life and reduced maintenance requirements.

3. Competitive Pricing: Compared to OEM (original equipment manufacturer) alternatives, the Namura piston offers a more affordable pricing option without sacrificing quality and performance.

1. Installation Complexity: Installing a new piston requires significant mechanical skills and experience, as well as specialized tools. This may result in additional labor costs.

2. Potential for Engine Adjustments: The installation of a new piston may require additional engine adjustments to ensure proper functioning and optimal performance.

3. Compatibility: Although the Namura piston is designed to fit the Honda TRX400EX Sportrax, it is essential to double-check compatibility before purchasing, as minor differences between engines may impact the piston's performance.

The Namura NA-1003-2 M-002 0.5 Hi-Comp piston is a viable alternative for replacing the worn-out piston in a Honda TRX400EX Sportrax (1999-2008). Its advantages include enhanced performance, durability, and competitive pricing. However, the installation process can be complex, and there may be a need for additional engine adjustments and compatibility checks.

If you are comfortable with the mechanical aspects of the piston replacement process, the Namura NA-1003-2 M-002 0.5 Hi-Comp piston is a solid choice for upgrading the performance of your Honda TRX400EX Sportrax while keeping costs in check. If you are uncertain about your mechanical abilities or prefer a more straightforward replacement process, it may be worth considering an OEM piston or seeking professional assistance.

Details:

Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Higher Performance piston without a higher price. Free Ground Shipping. Machined Smooth Heads: Reflects combustion heat and reduces carbon buildup, protecting the top of piston.

MOS2 coating to draw heat through piston walls and out the bottom. Hard anodized piston crown with a hardness of HRB 105. Pistons are more resistant to wear and scuffing, expand less with heat stronger. Includes: Piston, rings, cir clips, pin.

Namura Piston For HONDA TRX400EX SPORTRAX 1999 2008 0.5 Bore Hi-Comp: Hi-Comp. Minimized piston expansion and contraction. Bore Size: 85.47mm, Size Over Standard: 0.5mm, Compression: 11:1 Hi-Comp. Note: Image is for reference only, actual product may vary slightly depending on your vehicle.

Why replace your cylinder when you can the piston for a fraction of cost and time. Namura offers direct replacements for the original equipment as well hi-compression and a variety of oversized to meet your rides needs. To ensure you're receiving exactly what you want, some orders are sourced from various shipping facilities.

part #: na100032 prices

• $85.81-$92.87

specifications pistondon:

• for models: Trx400ex, Sportrax
• for makes: Honda
• for years: 1999-2008
• brand: Namura
• mpn: Na-10003-2
• part type: Piston
• vendor: Lionparts Powersports
• image note: Image Is For Reference Only, Actual Product May Vary Slightly.
• ships from: Usa
• handling time: Approximately 2 Business Days
• oem or performance: Performance/aftermarket

payments pistondon:

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

returns pistondon:

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

offer pistondon:

• started: August 25, 2025
• quantity: 2
• sold: 0
• availability: In Stock
• options: Ship-to-home

seller pistondon:

• city: Wilmington,
• rating: 99.1%
• # reviews: 220789

general pistondon:

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

shipping pistondon:

• class: Standard
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery
• transit: 3-8 Days
• carrier: FedEx
• type: Fixed

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