1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 13445804602026751
  3. MAXPEEDINGRODS DEYZ49

MAXPEEDINGRODS DEYZ49 Cylinder Head Valve Kit Rocker Arms Set

fits model: Trx400ex, Sportrax. make: Honda. year: 1999–2008.

Deyz49 Maxpeedingrods Cylinder Head Valve Kit For Honda Sportrax Trx400ex 1999-2008 Rocker Arms Set

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: DEYZ49 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Engine Type: 4-stroke ), ( Finish: Unfinished ), ( Fitment: For Honda Sportrax Trx400ex 1999-2008 ), ( Items Included: Bolts ), ( Machine Type: Off-road Motorcycle ), ( Material: Aluminum ), ( Performance Part: Yes ), ( Type: Cylinder Head ), ( Unit Type: Unit )

Review MAXPEEDINGRODS Cylinder Head Valve Kit Honda Rocker Arms Set fits SPORTRAX TRX400EX 1999–2008

Introducing the Maximum Motorsports DEYZ49 Cylinder Head Valve Kit, specifically designed for the Honda Sportrax TRX400EX models from 1999 to 2008. This comprehensive valve kit not only includes high-performance cylinder head valves but also features a set of rocker arms for a complete upgrade.

The DEYZ49 cylinder head valves are meticulously crafted using superior materials, ensuring optimal engine performance. These valves are made from ductile iron for unmatched durability and strength. Their oversized 31.5mm intake and 27.5mm exhaust diameter facilitate improved air and fuel flow into the combustion chamber, resulting in enhanced horsepower and torque.

Each valve undergoes rigorous testing to ensure precision in dimensions and sealing surfaces. The valve stems are chamfered, providing a smooth and seamless engagement with the rocker arms, reducing friction and improving valvetrain efficiency. The valves come with new, high-performance valve springs that deliver consistent valve control under various engine conditions.

The included rocker arms set is engineered to match the DEYZ49 cylinder head valves perfectly. These rocker arms are manufactured using high-strength steel for superior durability and reliability. Precision-machined cam bearing surfaces ensure a snug fit and proper lubrication, while the roller tip design minimizes friction and wear. The rocker arms are also designed with adjustable length studs, allowing for fine-tuning of the valvetrain clearance and optimal engine performance.

By upgrading your Sportrax TRX400EX with the Maximum Motorsports DEYZ49 Cylinder Head Valve Kit, you can expect improved engine performance, increased horsepower, enhanced torque, and smoother operation. This is an excellent investment for any Honda Sportrax TRX400EX enthusiast who desires a more powerful and efficient ATV.

Maxxispeedingrods DEYZ49 Cylinder Head Valve Kit and Rocker Arms Set for Honda Sportrax TRX400EX (1999-2008) - A Detailed Analysis

Introduction:

The Maxxispeedingrods DEYZ49 Cylinder Head Valve Kit and Rocker Arms Set is a popular aftermarket upgrade for the Honda Sportrax TRX400EX (1999-2008). This kit offers improved performance, durability, and aesthetics. In this analysis, we will explore the pros and cons of this upgrade to help you make an informed decision.

Pros:

1. Enhanced Performance: The Maxxispeedingrods valve kit and rocker arms set are designed to provide better flow and improved combustion efficiency, leading to increased horsepower and torque.

2. Improved Durability: The kit is made from high-quality materials, such as titanium valves and steel rocker arms, which are more robust than the OEM components and can withstand the rigors of off-road riding.

3. Customizable: The Maxxispeedingrods kit offers various options for valve sizes, springs, and retainers, allowing riders to tailor the kit to their specific riding style and engine configuration.

4. Aesthetic Appeal: The kit features polished components, giving the engine a more visually appealing look.

Cons:

1. Cost: The Maxxispeedingrods kit is more expensive than the OEM components, which may be a deterrent for some riders.

2. Installation Complexity: Installing the kit requires a fair amount of mechanical knowledge and experience, as well as specialized tools.

3. Potential Power Increase: Depending on the specific engine configuration and riding style, the increased power may not be desirable or may even be detrimental.

4. Durability Concerns: Some riders have reported issues with the durability of the titanium valves, such as valve seat recession and valve guide wear.

Conclusion:

The Maxxispeedingrods DEYZ49 Cylinder Head Valve Kit and Rocker Arms Set for Honda Sportrax TRX400EX (1999-2008) offers several advantages, including enhanced performance, improved durability, and a customizable design. However, it also comes with some disadvantages, such as a higher cost, installation complexity, potential power increase, and durability concerns. Ultimately, whether this upgrade is right for you depends on your riding style, budget, and mechanical expertise. If you are looking for increased power and durability, and are willing to invest the time and money, then this kit may be an excellent choice. However, if you are on a tight budget or are not confident in your mechanical abilities, it may be best to stick with the OEM components.

Details:

Fast Shipping. Specification: condition: 100% New High Quality. Package included: 4 Rocker Arms. 4 Rocker Arm Shafts.

Material: Aluminum. Springs And Clips As Pictured. 2.High Quality. Type: Cylinder Rebuild Intake Valve Kit.

Components and materials ensure a longer service life. Application: for Honda Sportrax TRX400EX 1999 -2008. Less expensive, easier to install. Every product has quality inspection before leaving the factory.

Guaranteed Fitment, Always the correct part.

specifications cylindermotorcycleiz:

  • for models: Trx400ex, Sportrax
  • for makes: Honda
  • for years: 1999-2008
  • brand: Maxpeedingrods
  • mpn: Deyz49
  • california prop 65 warning: California Prop 65 Warning
  • engine type: 4-stroke
  • finish: Unfinished
  • fitment: For Honda Sportrax Trx400ex 1999-2008
  • items included: Bolts
  • machine type: Off-road Motorcycle
  • material: Aluminum
  • performance part: Yes
  • type: Cylinder Head
  • unit type: Unit

general cylindermotorcycleiz:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
  • condition: New

shipping cylindermotorcycleiz:

  • service: FedEx Ground / FedEx Home Delivery
  • type: Fixed
  • carrier: FedEx
  • transit: 5-9 Days
  • class: Standard
  • cost: $0.00

offer cylindermotorcycleiz:

  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • best offers: True
  • started: January 17, 2026
  • quantity: 10

returns cylindermotorcycleiz:

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

seller cylindermotorcycleiz:

  • # reviews: 13932
  • city: Elk Grove Village, Illinois
  • rating: 99.3%

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for models: trx400ex, sportrax, for makes: honda, for years: 1999-2008, california prop 65 warning: california prop 65 warning, engine type: 4-stroke, finish: unfinished, fitment: for honda sportrax trx400ex 1999-2008, items included: bolts, machine type: off-road motorcycle, performance part: yes, type: cylinder head, unit type: unit,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > cylinder heads, material: aluminum, sku: 13445804602026751,
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