TRX7864

Overview

The Traxxas Springs, shock, medium (natural finish) (GTX) (3.141 rate, Green stripe) (2) TRX7864 are essential suspension tuning components designed specifically for the Traxxas XRT range of high-performance RC vehicles. Whether you're an experienced RC enthusiast looking to fine-tune your XRT's handling characteristics or you're new to the world of adjustable RC suspension, these genuine Traxxas shock springs offer a straightforward way to customise your vehicle's performance. As a trusted authorised Traxxas retailer in the UK, RC Model Shop stocks this genuine part to ensure you get authentic, quality components that work perfectly with your XRT.

Suspension tuning is one of the most effective ways to optimise your RC car's performance on different terrain types and track conditions. These medium-length GTX shock springs are engineered to work seamlessly within the XRT's suspension geometry, allowing you to adjust how your vehicle responds to bumps, jumps and cornering forces. The 3.141-rate spring constant (marked with the distinctive green stripe) positions these springs in the medium range of Traxxas's spring rate offerings, making them a versatile choice for drivers seeking a balanced suspension setup that works well across various driving styles and conditions. In the UK RC hobby market, having access to genuine Traxxas parts like these springs is crucial for maintaining your investment and achieving consistent, predictable handling.

These springs come as a pair (2) with natural finish, meaning they arrive uncoated and ready to install into your XRT's shock absorbers. The natural finish also allows you to easily inspect the spring condition and apply custom finishes if desired. Understanding spring rates and how to swap them is a fundamental skill in RC tuning, and these springs are an ideal entry point into more advanced suspension setup work for anyone involved in RC car racing or weekend bashing with a quality UK RC vehicle.

Key Features

• Medium-Length GTX Shock Springs — These springs are specifically engineered for use in GTX shock systems found in Traxxas XRT vehicles, ensuring perfect fitment and suspension geometry compatibility that generic springs cannot provide.
• 3.141 Spring Rate with Green Stripe Identification — The 3.141 rate places these springs in the medium stiffness category, offering a balanced compromise between comfort and responsiveness that works well for general-purpose driving without requiring extreme terrain conditions or specialist driving techniques.
• Natural Finish Construction — The uncoated natural finish allows you to inspect the spring material quality, assess wear patterns, and apply custom colours or protective coatings if you wish to match your vehicle's colour scheme or protect against corrosion.
• Suspension Tuning Capability — By swapping between different spring rates, you can tune your XRT's suspension to compensate for heavier or lighter vehicle configurations, adjust ride height, or modify how the suspension responds to track conditions, making these springs an affordable tuning tool for all skill levels.
• Genuine Traxxas Component — As official Traxxas parts, these springs are manufactured to the exact specifications required by XRT models, ensuring reliability and compatibility that aftermarket alternatives cannot guarantee.
• Pair Quantity — You receive two springs in this package, providing a complete replacement or upgrade set for both rear shock positions, which is the standard configuration for RC vehicle suspension systems.

Technical Performance

The Traxxas GTX shock springs represent decades of engineering refinement from one of the world's leading RC vehicle manufacturers. The 3.141 spring rate sits perfectly in the medium range of Traxxas's comprehensive spring selection, making it suitable for drivers seeking a balanced setup that doesn't demand extreme terrain or specialist driving conditions. The natural finish springs are manufactured from high-grade spring steel, offering consistent performance across repeated compression and extension cycles without permanent deformation. Spring rate in the RC world is measured in pounds-force per inch (lbs/in), and this 3.141-rate designation tells you exactly how much force is required to compress the spring by one inch—a critical specification for understanding how your vehicle will behave in different conditions. The green stripe colour-coding is Traxxas's standard identification system, allowing you to instantly identify which springs are installed in your vehicle and maintain consistency across multiple RC cars if you run an XRT fleet. The medium length of these springs is precisely calibrated to work within the XRT's suspension geometry, maintaining proper ride height, anti-squat and anti-dive characteristics that govern how weight transfers during acceleration, braking and cornering. These springs will perform consistently across a wide range of outdoor and indoor track conditions common in the UK RC hobby scene, from smooth tarmac to grass fields and purpose-built RC tracks.

What's in the Box

• Traxxas GTX shock springs, medium length (3.141 rate, green stripe) — 2 springs (1 pair)
• Natural finish, ready for installation into XRT shock absorbers

Suspension Tuning Guide

• Spring Rate Basics — Higher spring rate numbers indicate firmer, stiffer springs that resist compression more than softer springs, which affects how your XRT handles bumps and maintains stability during aggressive driving.
• Tuning for Weight — If you've added weight to your XRT (such as additional armour or a heavier battery pack), you may need stiffer springs to prevent excessive suspension compression and maintain proper ride geometry.
• Tuning for Terrain — Smoother tracks may benefit from slightly softer springs for better traction, while rough or rocky terrain often demands stiffer springs to prevent bottoming out and maintain clearance.
• Tuning for Driving Style — Aggressive drivers and racers often prefer stiffer springs for more immediate vehicle response and reduced body roll during cornering.

Frequently Asked Questions

• Which Traxxas XRT models are these shock springs compatible with? — These springs are designed for Traxxas XRT vehicles, specifically including the XRT VXL-8S models in all colour options (Blue, Orange, Green, Black) and the XRT Ultimate models (Green X and Blue X). Always verify your specific model number before purchasing to ensure compatibility with your RC car.
• How do I know which spring rate my XRT currently has installed? — Traxxas identifies spring rates using colour stripes painted on the spring body. The green stripe on these springs indicates the 3.141-rate specification. You can compare the stripe colours on your existing springs to identify what you currently have, then decide whether to move to a stiffer or softer setup based on your driving experience.
• What is the difference between spring rates and why does it matter? — Spring rate, measured in pounds-force per inch, determines how resistant the spring is to compression. A lower number like 2.3-rate springs will compress more easily and feel softer, whilst a higher number like 3.8-rate springs will resist compression and feel firmer. The choice between rates directly affects ride height, body roll during cornering, how well the suspension absorbs bumps, and overall vehicle stability during acceleration and braking.
• Can I use these springs on other Traxxas vehicles? — These springs are specifically engineered for XRT models and their GTX shock system. Whilst you might physically install them on other vehicles, they would not provide the correct suspension geometry or performance characteristics. Always use springs rated for your specific vehicle model to maintain proper handling and prevent suspension damage.
• How often do shock springs need replacing? — Shock springs are relatively durable components that typically last many months of regular use. However, springs can lose their stiffness over time due to repeated compression cycles, particularly if you drive very aggressively or frequently on rough terrain. If you notice your XRT's ride height gradually lowering over weeks or months, or if the suspension feels less responsive, it may be time to replace the springs with fresh ones.
• Are these springs suitable for beginners? — Yes, absolutely. These medium-rate springs are an excellent starting point for drivers learning about suspension tuning. The 3.141-rate provides balanced handling that works reasonably well across different conditions, and once you understand how suspension affects your vehicle, you can experiment with softer or stiffer springs to fine-tune performance. Suspension tuning is one of the most accessible and rewarding modifications in RC car setup.
• What tools do I need to change the shock springs? — Spring changes are one of the simplest RC modifications. You'll need a small screwdriver to remove the shock caps (usually a 2mm Allen key), then you can slide out the old spring and slide in the new one. No special tools or expertise required—it's perfect for learning basic RC maintenance and tuning skills.
• Do these springs come pre-installed in XRT vehicles? — The specific spring rate installed in your XRT depends on the configuration and variant you purchased. If you want to confirm what you currently have, check the stripe colour on the springs already in your vehicle's shocks and compare them to the green stripe marking on these medium-rate springs.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Springs, shock, medium (natural finish) (GTX) (3.141 rate, Green stripe) (2) TRX7864 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.