1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 13324677632565632
  3. MAXPEEDINGRODS TWFP3S

MAXPEEDINGRODS TWFP3S Valve Train Kit Rocker Shafts Springs Set

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

Twfp3s Maxpeedingrods Valve Train Kit For Honda Sportrax Trx400ex 1999-2008 Rocker Shafts Springs Set

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: TWFP3S ), ( 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 Train Kit Honda Rocker Shafts Springs Set fits SPORTRAX TRX400EX 1999–2008

Introducing the Maxipedia Racing Products (MPP) TwFP3S Valve Train Kit for the Honda Sportrax TRX400EX model years 1999-2008. This performance upgrade is designed to optimize the functioning of your ATV's engine, delivering improved power and efficiency. Let's delve deeper into the features of this impressive kit.

The TwFP3S Valve Train Kit primarily consists of rocker arms, camshafts, lifters, and springs. These components are meticulously engineered to provide better valve control and engine response. The rocker arms, made from high-quality billet aluminum, are lightweight yet robust, reducing friction and enhancing power transfer. The arms are also fitted with durable bushings that ensure longevity and minimize play.

The camshafts in this kit are designed to provide a more aggressive intake and exhaust duration. The result is a more potent combustion process and an increase in horsepower. The camshafts are also made from high-strength steel, ensuring they can withstand the rigors of off-road riding.

Maxipedia Racing Products' TwFP3S Valve Train Kit also includes high-performance lifters and springs. The lifters are designed to minimize friction and increase engine response by reducing valve train slop. The springs, manufactured from high-tensile steel, provide the necessary force to close the valves efficiently, resulting in optimal engine performance.

The installation of this kit is relatively straightforward, with most users reporting that it can be completed in an afternoon with basic hand tools. The kit comes with comprehensive instructions, making the process even more accessible to DIY enthusiasts.

In summary, the Maxipedia Racing Products TwFP3S Valve Train Kit for the Honda Sportrax TRX400EX (1999-2008) is a high-quality performance upgrade that delivers increased horsepower, improved engine response, and enhanced durability. By upgrading the critical valve train components, you'll experience a more exhilarating riding experience on your ATV.

Maxima Racing (Maxpeedingrods) Twfp3s Valve Train Kit for Honda TRX400EX (1999-2008): A Comprehensive Analysis

Introduction:

Maxima Racing, more popularly known as Maxpeedingrods, offers a Twfp3s valve train kit designed specifically for the Honda TRX400EX models produced between 1999 and 2008. This kit includes rocker arms, springs, and other components intended to enhance engine performance. This analysis aims to provide an in-depth understanding of the advantages and disadvantages of investing in this product, followed by a conclusive recommendation.

Pros:

1. Improved Performance: The Twfp3s valve train kit is designed to provide better engine response and increased horsepower. The high-performance rocker arms and springs enable a more efficient intake and exhaust cycle, ultimately resulting in improved engine performance.

2. Durability: Maxima Racing components are known for their durability. The Twfp3s kit consists of high-quality materials that are designed to withstand the rigors of off-road riding.

3. Adjustability: The kit provides adjustability options, allowing riders to fine-tune the valve clearance for optimal engine performance.

4. Enhanced Appearance: The sleek design and anodized finish of the Maxima Racing components add an aesthetic appeal to the engine.

Cons:

1. Cost: The Twfp3s valve train kit is a premium aftermarket product, and its cost may be a deterrent for some riders.

2. Installation Complexity: Installing the kit may require advanced technical skills or professional assistance, increasing the overall cost and time investment.

3. Potential Compatibility Issues: Although the kit is specifically designed for Honda TRX400EX models between 1999 and 2008, there may be compatibility issues with certain engine configurations or modifications.

Conclusion:

The Maxima Racing (Maxpeedingrods) Twfp3s valve train kit for Honda TRX400EX (1999-2008) offers several advantages, including improved performance, durability, adjustability, and enhanced appearance. However, its premium cost and installation complexity might deter some riders. Moreover, potential compatibility issues with certain engine configurations or modifications should be considered.

Recommendation:

If you are an avid off-road rider seeking to enhance the performance of your Honda TRX400EX (1999-2008) and have the technical skills or resources for installation, the Maxima Racing Twfp3s valve train kit is an excellent investment. However, if cost is a concern or you have engine modifications, it is recommended to consult Maxima Racing or a professional mechanic to ensure compatibility before making a purchase.

Details:

Type: Cylinder Rebuild Intake Valve Kit. Package included: 4 Rocker Arms. 4 Rocker Arm Shafts. Application: for Honda Sportrax TRX400EX 1999 -2008.

Factory Warranty. Less expensive, easier to install. Every product has quality inspection before leaving the factory. Springs And Clips As Pictured.

Fast Shipping. offers a minimum one year, unlimited mileage warranty on most of parts sold, some are otherwise noted longer manufacturer 2.High Quality. Best Costumer Service.

Specification: condition: 100% New High Quality. It begins from the date purchased. Components and materials ensure a longer service life. Material: Aluminum.

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specifications cylindermotorcycleiz:

  • for models: Trx400ex, Sportrax
  • for makes: Honda
  • for years: 1999-2008
  • brand: Maxpeedingrods
  • mpn: Twfp3s
  • 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

offer cylindermotorcycleiz:

  • best offers: True
  • quantity: 10
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: January 5, 2026

shipping cylindermotorcycleiz:

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

seller cylindermotorcycleiz:

  • # reviews: 265
  • rating: 99.6%
  • city: Elk Grove Village, Illinois

payments cylindermotorcycleiz:

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general cylindermotorcycleiz:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
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: 13324677632565632,
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