Traxxas Brass Wheel Weights 31g Each for TRX-4M RC Crawler TRX9780

Overview

The Traxxas Brass Wheel Weights (TRX9780) are precision-engineered tuning components designed specifically for the Traxxas TRX-4M 1/18 scale RC crawlers and trail trucks. Each weight adds 31 grams to the lowest point of your RC vehicle, making them an essential upgrade for enthusiasts looking to maximise performance on rocky terrain and challenging trails. Whether you're running a Ford Bronco, Land Rover Defender, Chevrolet K10, or Ford F-150 in the TRX-4M range, these brass weights deliver measurable improvements in handling dynamics and climbing capability. For RC car UK enthusiasts serious about rock-crawling and trail performance, understanding weight distribution is fundamental to success, and these weights place mass exactly where it matters most.

Brass wheel weights are a recognised performance upgrade in the RC hobby community, trusted by both weekend bashers and competitive crawlers alike. Unlike standard beadlock barrels, these weights provide superior stability characteristics whilst maintaining the aesthetic appeal of your build. They're an affordable yet highly effective way to tune your TRX-4M for specific terrain conditions. Available at RC Model Shop, these weights represent genuine Traxxas engineering and quality that serious RC enthusiasts have come to expect.

If you're discovering the world of RC tuning for the first time, wheel weights are an excellent entry point into performance customisation. They require no complex installation, work with your existing 9781-series beadlock wheels, and deliver noticeable results immediately. This makes them perfect for anyone wanting to elevate their TRX-4M's capabilities without investing in major chassis or drivetrain modifications.

Key Features

• Brass Construction — The weights are manufactured from brass, a material chosen for its density and durability, ensuring consistent weight distribution and longevity even during aggressive trail use and rock-crawling sessions.
• 31 Grams Per Weight — Each individual weight adds exactly 31 grams of mass to the lowest part of your RC crawler, providing measurable weight-bias that directly influences vehicle dynamics and stability.
• Improved Anti-Rollover Stability — By lowering the centre of gravity and adding mass at the wheel perimeter, these weights significantly enhance anti-rollover characteristics, allowing you to navigate steep terrain and side slopes with greater confidence and control.
• Superior Rock-Climbing Capability — The enhanced weight distribution provides superior grip and traction during rock-crawling, enabling your TRX-4M to climb steeper obstacles and maintain momentum through technical sections that would otherwise prove challenging.
• Compatible with 9781-Series Beadlock Wheels — These weights are specifically engineered to replace the standard beadlock barrels on Traxxas 9781-series beadlock wheels, ensuring perfect fit and optimal performance with genuine Traxxas hardware.
• Sold as a Pair — The package includes two wheel weights, allowing you to equalise weight distribution across your RC vehicle for balanced handling characteristics.
• Direct Replacement Design — The weights replace standard beadlock barrels, meaning installation is straightforward with no additional modifications or adapters required to your existing wheels and suspension.
• TRX-4M Platform Compatibility — Designed exclusively for the Traxxas TRX-4M family of 1/18 scale RC crawlers and trail trucks, ensuring perfect integration with Ford Bronco, Land Rover Defender, Chevrolet K10, and Ford F-150 variants.

Technical Performance

The Traxxas Brass Wheel Weights represent precision engineering focused on weight distribution optimisation for 1/18 scale RC crawlers. Manufactured from solid brass—a material prised in RC tuning for its consistency and density—these weights deliver exactly 31 grams of additional mass per piece, allowing competitors and enthusiasts to fine-tune their vehicle's weight bias for specific trail conditions and terrain types. The brass construction ensures durability through repeated impact and harsh rock-crawling environments whilst maintaining dimensional consistency that guarantees reliable performance across multiple tuning sessions. The weights function by lowering the vehicle's centre of gravity and increasing mass at the wheel perimeter, which substantially improves both anti-rollover stability and traction characteristics during rock-crawling. When installed on Traxxas 9781-series beadlock wheels—the OEM specification for TRX-4M vehicles—these weights work in harmony with the suspension geometry to enhance climbing angles and reduce the likelihood of tipping during side-slope traversal. The engineering philosophy behind these weights reflects Traxxas's commitment to performance optimisation at every scale, ensuring that even 1/18 scale vehicles can achieve realistic weight distribution characteristics that mirror their full-size counterparts. For UK RC enthusiasts engaged in competitive crawling or serious trail exploration, these weights represent a cost-effective performance upgrade that delivers measurable results without requiring technical expertise or complex installation procedures.

What's in the Box

• Traxxas Brass Wheel Weights x2 (31 grams each)

Frequently Asked Questions

• Will these brass wheel weights fit my TRX-4M RC crawler? — Yes, these weights are specifically engineered for Traxxas TRX-4M 1/18 scale vehicles and are compatible with all variants including the Ford Bronco, Land Rover Defender, Chevrolet K10, and Ford F-150 trail trucks, provided you're using genuine Traxxas 9781-series beadlock wheels.
• How much do these wheel weights improve rock-crawling performance? — Each weight adds 31 grams to the lowest part of your TRX-4M, delivering noticeable improvements in anti-rollover stability and climbing capability. The enhanced weight distribution lowers the centre of gravity and increases traction, allowing your vehicle to tackle steeper terrain and technical obstacles more confidently.
• Can I use these weights on other Traxxas wheel models? — No, these weights are specifically designed to replace the standard beadlock barrels on Traxxas 9781-series and 9881-series beadlock wheels only. Using them on other wheel types will not fit correctly or function as intended.
• Are these weights easy to install on my TRX-4M? — Yes, installation is straightforward. The brass weights simply replace the standard beadlock barrels on your 9781-series wheels. No special tools or technical knowledge is required, making them an excellent upgrade option for beginners and experienced RC enthusiasts alike.
• What is the difference between brass weights and the standard beadlock barrels? — Standard beadlock barrels are lighter and serve primarily to secure the tyre to the wheel rim. Brass weights provide significant additional mass (31 grams per weight) at the wheel perimeter, which directly improves vehicle dynamics by lowering the centre of gravity and enhancing traction during rock-crawling sessions.
• Do I need both weights or can I install just one? — Whilst you can technically install one weight, using both weights together ensures balanced weight distribution across your RC vehicle, which delivers the optimal improvement in anti-rollover stability and handling characteristics during trail use.
• Will these weights make my TRX-4M faster or slower? — These weights are tuning components focused on stability and climbing performance rather than speed. The additional mass may slightly reduce acceleration, but the improvement in traction and terrain grip typically outweighs any minor speed reduction, particularly during rock-crawling and technical trail driving.

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 Wheel weights, brass (31 grams each) (2 pcs) (fits #9781 series wheels) TRX9780 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.