1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 12749152910187753
  3. MAXPEEDINGRODS S94PNZ

MAXPEEDINGRODS S94PNZ Valve Spring Rocker Kit Intake Exhaust Set

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

S94pnz Maxpeedingrods Valve Spring Rocker Kit For Honda Sportrax Trx400ex 1999-2008 Intake Exhaust Set

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: S94PNZ ), ( 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 Valve Spring Rocker Kit Honda Intake Exhaust Set fits SPORTRAX TRX400EX 1999–2008

Introducing the Maxpeedingrods S94PNZ Valve Spring Rocker Kit, a high-performance upgrade for your Honda Sportrax TRX400EX from the years 1999 to 2008. This kit is specifically designed to enhance intake and exhaust efficiency, delivering more power and a smoother riding experience.

The heart of this kit lies in its high-quality rocker arms. These arms are meticulously engineered using advanced CNC machining techniques to ensure precise dimensions and a perfect fit on your TRX400EX engine. Crafted from durable, forged steel, they boast an impressive strength-to-weight ratio, reducing unsprung weight and improving engine responsiveness.

The S94PNZ kit also includes top-of-the-line valve springs. These springs feature a unique design that maximizes power output and ensures consistent valve control throughout the RPM range. Each spring is meticulously tested to ensure optimal performance, providing you with the reliability and durability you've come to expect from Maxpeedingrods.

To ensure a seamless installation process, the kit includes all necessary hardware, including new bolts, locknuts, and shims. Each component is carefully packaged to protect against damage during shipping.

Upgrading your Honda Sportrax TRX400EX with the Maxpeedingrods S94PNZ Valve Spring Rocker Kit not only enhances performance but also adds a touch of style to your vehicle. The sleek design of the new rocker arms gives your engine a more polished look, making it a great choice for both casual riders and those who compete in off-road events.

In summary, the Maxpeedingrods S94PNZ Valve Spring Rocker Kit is an essential upgrade for any Honda Sportrax TRX400EX from 1999 to 2008. With its high-quality components, precise engineering, and easy installation, this kit delivers increased power, improved engine responsiveness, and a touch of style that sets your vehicle apart from the competition.

Maxima Racing (Maxpeedingrods) S94PNZ Valve Spring Rocker Kit for Honda Sportrax TRX400EX (1999-2008): A Detailed Analysis

Introduction:

The Maxima Racing (Maxpeedingrods) S94PNZ Valve Spring Rocker Kit is an aftermarket upgrade designed for the Honda Sportrax TRX400EX model years 1999 through 2008. This kit aims to improve engine performance and reliability, but like any upgrade, it comes with its advantages and disadvantages. In this analysis, we will discuss the key pros and cons of purchasing this valve spring rocker kit.

Pros:

1. Enhanced Power: This kit is designed to provide improved valve control, resulting in better engine response and increased power output.

2. Improved Durability: The upgraded components in this kit, such as the high-performance valve springs and rocker arms, contribute to increased engine longevity.

3. Reduced Valve Train Noise: The kit is reported to significantly decrease valve train noise, making for a smoother and quieter operating engine.

4. Racing Heritage: Maxima Racing, the manufacturer, is a well-known brand in the motor sports industry, and their products have proven track records in performance and reliability.

Cons:

1. Cost: This kit may be considered expensive compared to OEM or stock components, which could be a deterrent for some consumers.

2. Installation Complexity: Installing the kit requires a fair amount of mechanical expertise and specialized tools, making it a less desirable option for less experienced mechanics.

3. Potential Engine Tuning: The increased performance of this kit may require additional engine tuning to ensure optimal performance and to prevent potential issues.

4. Limited Availability: The Maxima Racing S94PNZ Valve Spring Rocker Kit may not be readily available at local dealerships or parts stores, which could result in longer wait times for delivery.

Conclusion:

The Maxima Racing (Maxpeedingrods) S94PNZ Valve Spring Rocker Kit for the Honda Sportrax TRX400EX (1999-2008) offers several advantages, including enhanced power, improved durability, reduced valve train noise, and the racing heritage of its manufacturer. However, it also comes with disadvantages, such as cost, installation complexity, potential engine tuning, and limited availability.

Recommendation:

If you are a serious off-road enthusiast or competition rider seeking maximum engine performance and reliability, the Maxima Racing S94PNZ Valve Spring Rocker Kit could be an excellent investment. However, if you are a casual rider or have limited mechanical expertise, the cost and complexity of this upgrade may not be justified. Instead, consider assessing your personal riding needs and budget before making a decision.

Details:

Springs And Clips As Pictured. Material: Aluminum. 2.High Quality. Fast Shipping.

Guaranteed, Fitment Price match Always the correct part. Specification: condition: 100% New High Quality. PRODUCT DISPLAY Valve Spring Rocker Kit for Honda Sportrax TRX400EX 1999 2008 Intake Exhaust Set. Every product has quality inspection before leaving the factory.

Application: for Honda Sportrax TRX400EX 1999 -2008. Less expensive, easier to install. Package included: 4 Rocker Arms. Type: Cylinder Rebuild Intake Valve Kit.

Components and materials ensure a longer service life.

specifications cylindermotorcycleiz:

  • for models: Trx400ex, Sportrax
  • for makes: Honda
  • for years: 1999-2008
  • brand: Maxpeedingrods
  • mpn: S94pnz
  • 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

shipping cylindermotorcycleiz:

  • cost: $0.00
  • type: Fixed
  • class: Standard
  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • transit: 2-5 Days

returns cylindermotorcycleiz:

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

offer cylindermotorcycleiz:

  • availability: In Stock
  • started: October 20, 2025
  • best offers: True
  • quantity: 10
  • options: Ship-to-home
  • sold: 0

general cylindermotorcycleiz:

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

seller cylindermotorcycleiz:

  • # reviews: 1188
  • rating: 99.5%
  • city: Elk Grove Village, Illinois

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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: 12749152910187753,
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