Traxxas Suspension Arms Upper and Lower Replacement Parts TRX4931

Overview

The Traxxas Suspension Arms (upper and lower) TRX4931 are essential replacement parts for RC enthusiasts who demand reliability and performance from their RC car UK setups. Whether you're a dedicated basher pushing your vehicle to the limits, a competitive racer fine-tuning your suspension geometry, or simply maintaining your prized RC collection, these genuine Traxxas suspension components are engineered to deliver consistent handling and durability. Suspension arms are among the most stressed components in any RC car, constantly flexing and absorbing impacts during aggressive driving, jumps and high-speed manoeuvres. When your existing arms show signs of wear, cracking or bending, upgrading to fresh OEM Traxxas parts is the smart choice for restoring your vehicle's performance and ensuring safe, predictable handling on the track or trail.

This pack contains one upper suspension arm and one lower suspension arm, making it an ideal replacement set for addressing wear on either the front or rear axles of compatible Traxxas models. Traxxas has built its reputation on manufacturing high-quality, precision-engineered RC components that work together seamlessly, and these suspension arms are no exception. When you choose genuine Traxxas parts, you're investing in parts that have been designed, tested and validated specifically for your vehicle's chassis and suspension geometry. RC car enthusiasts throughout the UK trust Traxxas products because they know they're getting authentic engineering excellence, backed by the manufacturer's commitment to performance and reliability.

The suspension system is absolutely critical to your RC car's ability to handle different terrains and driving styles. Upper and lower suspension arms work in tandem to control wheel movement, maintain proper ride height, and manage the geometry of your suspension throughout the suspension stroke. When these components wear or break, your vehicle's handling becomes unpredictable and dangerous. By replacing them with genuine Traxxas suspension arms, you restore your RC car to its intended performance characteristics, ensuring that your vehicle responds to steering inputs accurately and maintains stable, controlled handling whether you're racing at speed or crawling over obstacles.

Key Features

• Genuine Traxxas OEM Component — This is an authentic, manufacturer-approved suspension arm assembly engineered by Traxxas specifically for their RC vehicles, ensuring perfect compatibility and performance with your model.
• Upper and Lower Arm Pair — The pack includes both an upper and lower suspension arm, giving you a complete replacement set for one side or allowing you to service both sides of your vehicle's suspension system simultaneously.
• Precision Engineering — Traxxas suspension arms are manufactured to exacting tolerances and specifications, ensuring consistent handling characteristics and geometric accuracy for optimal steering response and cornering performance.
• Durable Construction — Built from high-quality materials selected to withstand the extreme stresses and impacts experienced during aggressive RC driving, whether you're bashing on grass, competing on asphalt or tackling rocky terrain.
• Direct Fit Replacement — Designed as a direct replacement for original Traxxas suspension arms, these parts bolt straight onto your vehicle without modification, requiring no special tools or technical expertise to install.
• Essential Maintenance Component — Suspension arms are wear items that eventually need replacement as part of regular RC car maintenance, making these replacement arms a must-have spare for any serious RC enthusiast.

Technical Performance

Suspension arms are fundamental to your RC car's suspension geometry and handling characteristics. These components form the linkage between your vehicle's chassis and wheel hubs, controlling the vertical movement of the wheels whilst maintaining precise suspension geometry throughout the suspension stroke. The upper and lower arms work together to define the camber curve, anti-squat characteristics, and overall suspension behaviour of your vehicle. When new, factory-supplied suspension arms are carefully engineered to deliver the perfect balance of stability, responsiveness and comfort across a wide range of driving conditions and speeds. However, these arms are subjected to enormous forces during RC driving—impacts from jumps, cornering loads from high-speed turns, and twisting forces from uneven terrain all contribute to gradual wear and potential cracking or bending. Traxxas manufactures replacement suspension arms from durable materials engineered to match the original specifications precisely, ensuring that your vehicle's suspension geometry remains correct and your handling characteristics remain true to the engineer's original intentions. Whether you're running 2WD or 4WD vehicles, brushless or brushed powertrains, these suspension arms deliver the structural rigidity and precision fit that Traxxas vehicles demand.

What's in the Box

• 1 x Upper suspension arm
• 1 x Lower suspension arm

Frequently Asked Questions

• When should I replace my RC car suspension arms? — Suspension arms should be replaced immediately if you notice visible cracks, bends, or flex in the arms, or if your vehicle's handling has become unpredictable. Even without visible damage, competition drivers often replace suspension arms regularly as maintenance, as slight wear can affect precision handling. For casual bashers, replacement typically becomes necessary after significant crashes or several seasons of regular use.
• Are these arms compatible with all Traxxas RC vehicles? — These arms are specifically designed for compatible Traxxas models. You should verify the model number TRX4931 is correct for your specific Traxxas vehicle by consulting your user manual or contacting the RC Model Shop team to confirm compatibility before ordering.
• Do I need both upper and lower arms, or just one? — This pack provides both upper and lower arms. If only one arm is damaged, you may only need to replace that single arm; however, many RC enthusiasts choose to replace both simultaneously to ensure even wear characteristics and consistent suspension feel across both sides of the vehicle.
• How difficult is it to install new suspension arms? — Installation is straightforward for anyone comfortable with basic RC maintenance. You'll typically need a hex key or ball-end wrench to remove the fasteners holding the old arms in place, then bolt on the new arms using the same fasteners. Installation usually takes 10-15 minutes per arm. If you're unfamiliar with RC maintenance, the team at RC Model Shop can provide guidance or installation support.
• Will new suspension arms improve my RC car's performance? — If your existing arms are bent or worn, yes—replacing them will restore your vehicle's handling to its original precision and responsiveness. If your existing arms are in good condition, performance improvement will be minimal; however, new arms do restore full structural rigidity and help maintain your vehicle's intended suspension geometry and handling characteristics.
• What is the difference between upper and lower suspension arms? — Upper and lower arms are mounted at different points on the suspension and work together to control wheel movement. Upper arms typically mount higher on the chassis and wheel hub, whilst lower arms mount lower, creating the A-frame or wishbone shape of the suspension linkage. Both are essential for proper suspension function.

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 Suspension arms (upper / lower) (1 each) TRX4931 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.