Traxxas Tyres, Gravix (left & right)/ foam inserts (2) TRX7873

Overview

The Traxxas Tyres, Gravix (left & right) with foam inserts (TRX7873) are premium race tyres engineered for serious RC enthusiasts who demand performance at the track or in wild off-road conditions. These low-profile 7.4" x 4.0" tyres represent the pinnacle of Traxxas tyre technology, combining advanced engineering with proven durability to give you the competitive edge you need. Whether you're running an RC monster truck or stadium truck, these Gravix tyres deliver the grip, stability and responsiveness that separates winners from the rest of the field. For anyone serious about RC car performance in the UK, these tyres are an investment in genuine Traxxas quality and racing credentials.

Built to run hard at the track or in the wild, the Gravix race tyres showcase everything Traxxas has learned about tyre design and construction over decades of RC racing. These are not generic off-the-shelf tyres; they are purpose-built components engineered for vehicles that demand maximum performance. The package includes a left and right pair of tyres plus foam inserts, giving you everything needed to upgrade your vehicle's footprint and transform its handling characteristics. If you're looking for replacement tyres for your XRT or accessory tyres for your X-Maxx, the Gravix range delivers the performance you expect from the Traxxas name.

The Gravix tyres are suitable for bashers, racers and everyone in between. Whether you're a weekend RC driver looking to improve your machine's grip and stability, or a competitive racer chasing lap time improvements, these tyres will make an immediate difference to your RC experience. Their directional tread pattern and advanced compound technology make them an ideal choice for UK RC enthusiasts who want to run faster, corner harder and maintain control in challenging conditions.

Key Features

• Low-profile 7.4" x 4.0" dimensions — The specific sizing provides optimal ground clearance and rolling resistance characteristics for large-scale RC vehicles, ensuring your machine sits at the ideal ride height for both speed and stability on varied terrain.
• Directional tread pattern — The carefully engineered directional tread blocks are optimised for water evacuation and traction consistency, whilst running significantly quieter than traditional off-road tyres, making them ideal for track sessions where noise matters.
• Thick centre carcass construction — This reinforced central structure prevents ballooning at high speed, which occurs when traditional tyres deform under cornering loads and centrifugal force, maintaining consistent contact patch even under aggressive driving.
• Excellent traction performance — The Gravix compound and tread design deliver superior grip on both dirt and asphalt surfaces, giving you confidence in hard acceleration, precise braking and committed cornering regardless of surface conditions.
• Included foam inserts — The package contains foam inserts specifically matched to these tyres, which provide dampening, shape retention and improved handling consistency, particularly important for maintaining tyre profile during high-speed running.
• Left and right pair configuration — Supplied as a matched pair with directional orientation, these tyres are ready to bolt straight onto your vehicle without additional prep or research into compatibility.
• Race-proven engineering — Developed and tested by Traxxas for genuine large-scale RC vehicles including the XRT and X-Maxx platforms, these tyres carry the credibility of real-world racing performance.

Technical Performance

The Gravix race tyres represent a significant leap forward in large-scale RC tyre technology, combining advanced rubber compound chemistry with precision tread design to deliver measurable performance improvements. The thick centre carcass is engineered from reinforced materials that prevent the ballooning effect that compromises handling at high speed, maintaining a consistent contact patch even under aggressive cornering loads and centrifugal forces that would deform lesser tyres. The directional tread pattern features precisely calculated block geometry that promotes water evacuation and maintains traction consistency across varied surfaces, whether you're running on dirt, asphalt or mixed terrain. The compound itself is formulated for optimal grip across the temperature range typical of UK racing conditions, warming up quickly during initial acceleration and maintaining consistent friction coefficients throughout extended running sessions. The low-profile 7.4" x 4.0" dimensions are optimised for large-scale machines like the 1/7 scale XRT and 1/6 scale X-Maxx, providing the ground clearance and rolling diameter these vehicles require whilst maintaining the low profile that modern RC suspension geometries demand. The included foam inserts are essential components that dampen vibration, maintain tyre shape under load and contribute to the overall handling feel, preventing the tyre from developing flat spots during storage and maintaining round profile during high-speed running. These tyres are manufactured to exacting Traxxas standards and tested to ensure they meet the performance expectations of serious racers and dedicated enthusiasts who run their RC vehicles hard.

What's in the Box

• Gravix race tyre (left)
• Gravix race tyre (right)
• Foam insert (qty 1)
• Foam insert (qty 1)

Compatibility

The Traxxas Gravix tyres are replacement parts for the XRT range and optional accessory tyres for the X-Maxx large-scale monster truck. These tyres fit the following models: XRT VXL-8S, XRT Ultimate, and are compatible with X-Maxx Belted RTR and X-Maxx Ultimate variants in all available colours including red, green, orange and blue. If you own any version of these vehicles, the Gravix tyres will bolt straight on and immediately improve your machine's on-track performance.

Frequently Asked Questions

• Are Gravix tyres suitable for both track racing and off-road bashing? — Yes, these are true dual-purpose race tyres built to run hard at the track or in the wild. The directional tread pattern provides excellent traction in both environments, making them versatile enough for weekend bashers and competitive racers alike. The thick centre carcass means they're equally at home on smooth asphalt or rough terrain.
• What makes Gravix tyres quieter than traditional off-road tyres? — The directional tread pattern is engineered to minimise noise generation by optimising how the tread blocks engage and release from the surface. This is particularly beneficial for track sessions where noise restrictions exist, allowing you to push hard without compromising your track session time.
• Do the foam inserts come with the tyres? — Yes, the package includes two foam inserts specifically matched to the Gravix tyre profile. These foam inserts are essential for dampening vibration, maintaining tyre shape and contributing to consistent handling throughout extended running sessions.
• Will Gravix tyres prevent my vehicle from ballooning at high speed? — The thick centre carcass is specifically engineered to prevent ballooning, which is the deformation that occurs when cornering forces and centrifugal acceleration cause traditional tyres to bulge outward. This keeps your contact patch consistent and your handling predictable even when running at maximum speed.
• Are these original Traxxas tyres or aftermarket replacements? — These are genuine Traxxas Gravix race tyres manufactured to Traxxas specifications and quality standards. They are replacement parts for XRT models and optional accessory upgrades for X-Maxx vehicles, ensuring complete compatibility and performance consistency with your Traxxas vehicle.
• What is the scale of vehicles these tyres fit? — These low-profile 7.4" x 4.0" tyres are designed for large-scale RC vehicles including the 1/7 scale Traxxas XRT and 1/6 scale Traxxas X-Maxx, and are not compatible with smaller 1/10 or 1/8 scale vehicles.
• How do Gravix tyres compare to standard Traxxas tyres? — Gravix tyres feature advanced race-focused engineering with a thicker centre carcass for anti-ballooning performance, directional tread patterns for quieter and more consistent operation, and a compound formulated specifically for track and high-performance use, making them a significant upgrade from standard all-terrain patterns.

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 Tyres, Gravix (left & right)/ foam inserts (2) TRX7873 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.