Traxxas Caster blocks, 6061-T6 aluminium (Blue-anodised) (left & right) TRX9733-BLUE

Overview

The Traxxas Caster blocks, 6061-T6 aluminium (Blue-anodised) (left & right) TRX9733-BLUE are premium upgrade components designed specifically for the Traxxas TRX-4M 1/18 scale trail truck platform. These heavy-duty caster blocks are essential tuning parts for anyone serious about maximising their RC crawler's performance on challenging terrain. Whether you're a seasoned RC enthusiast in the UK exploring rock crawling, a weekend basher tackling rough garden courses, or a competitive trail driver, these aluminium C-hubs represent a proven upgrade path used by experienced TRX-4M owners to enhance stability and climbing capability.

Built from tough 6061-T6 aircraft-grade aluminium and finished with a brilliant blue anodised coating, these caster blocks combine functional engineering with aesthetic appeal. The blue-anodised finish not only adds high-tech style to your off-road machine but also provides a durable protective layer against corrosion and wear. These are genuine Traxxas components, manufactured to the exacting standards expected from the world's leading RC brand, ensuring compatibility and reliability with your TRX-4M platform.

RC car enthusiasts across the UK know that upgrade choices can make the difference between an average machine and a capable trail-conquering platform. The TRX9733-BLUE caster blocks address a specific performance gap: they provide crucial weight distribution improvements that enhance anti-rollover stability while maintaining the precise steering geometry that makes the TRX-4M such a respected choice among serious RC crawlers and trail runners.

Key Features

• 6061-T6 Aluminium Construction — Manufactured from premium aircraft-grade 6061-T6 aluminium, these caster blocks deliver the perfect balance of strength and lightweight performance, ensuring durability during aggressive trail running and rock crawling whilst maintaining the precise weight distribution your TRX-4M requires for optimal handling.
• Blue-Anodised Finish — The brilliant anodised finish provides not just stunning visual appeal that matches the modern aesthetic of your trail truck, but also delivers genuine protective benefits by creating a corrosion-resistant surface that maintains appearance and functionality through extended use in varied weather conditions across the UK.
• Precision Machining — Each caster block is carefully machined to preserve the TRX-4M's trail-tuned steering and suspension geometry, meaning you gain performance benefits without sacrificing the finely-balanced handling characteristics that make this platform such a respected choice among RC crawlers and trail enthusiasts.
• Left and Right Configuration — This package includes both left and right caster blocks, providing the complete solution needed for symmetric suspension tuning and ensuring your TRX-4M maintains balanced handling characteristics on both sides of the chassis during technical trail driving.
• Anti-Rollover Stability Enhancement — By adding carefully calculated weight to the lowest part of your TRX-4M chassis, these caster blocks improve anti-rollover stability, making your machine more capable of maintaining traction and control when navigating steep slopes, technical rock formations, and challenging off-road terrain.
• Rock-Climbing Capability Improvement — The weight distribution advantages provided by these upgraded caster blocks translate directly into superior rock-climbing capability, allowing your TRX-4M to tackle steeper angles and more demanding terrain with increased confidence and reduced roll risk.
• Genuine Traxxas Component — As an authentic Traxxas part, these caster blocks are engineered specifically for the TRX-4M platform, ensuring perfect compatibility, proper fitment, and the quality assurance that comes with using official manufacturer components rather than aftermarket alternatives.

Technical Performance

These aluminium caster blocks represent serious engineering optimisation for the TRX-4M platform. The 6061-T6 aluminium material selection is no accident – this aircraft-grade alloy provides exceptional strength-to-weight ratio, crucial stiffness, and excellent machineability, allowing Traxxas engineers to craft components with precise tolerances that maintain the TRX-4M's carefully balanced suspension geometry. The blue-anodised finish adds approximately 0.003-0.005 inches of protective coating whilst delivering the visual impact that distinguishes upgraded machines from stock configurations. By incorporating these heavier aluminium caster blocks compared to plastic alternatives, the TRX-4M gains improved mass distribution that lowers the centre of gravity, directly translating to more predictable handling during high-angle climbing, enhanced roll stability when traversing side slopes, and superior traction management on technical terrain. The precision machining ensures that steering response, suspension travel, and Ackermann geometry – critical for crawling performance – remain perfectly aligned with Traxxas's original trail-tuned setup. This is why serious RC crawler drivers and competitive trail enthusiasts across the UK specify genuine Traxxas aluminium upgrades: they deliver tangible performance improvements without introducing the steering vagueness or handling inconsistencies that sometimes accompany poorly-engineered aftermarket alternatives. These components will integrate seamlessly into your TRX-4M whether you're upgrading a brand-new brushless RTR model or enhancing an existing build.

What's in the Box

• Traxxas Caster blocks, 6061-T6 aluminium (Blue-anodised) — Left caster block
• Traxxas Caster blocks, 6061-T6 aluminium (Blue-anodised) — Right caster block

Compatibility

These caster blocks are specifically designed for the Traxxas TRX-4M 1/18 scale platform and are compatible with the complete range of TRX-4M models, including all Ford Bronco variants (Blue, Red, Orange, Black, White, and Area 51 colours), Land Rover Defender models (Pink, Green, Light Blue, Black, Silver, and Tan editions), Chevrolet K10 High Trail models (Blue, Red, and Black), Ford F-150 High Trail variants (Black, Brown, and Blue), and both the TRX-4MT K10 and F150 Monster Truck variants (available in Red and Black). If you own any TRX-4M-based trail truck or monster truck, these caster blocks will fit and enhance your machine.

Frequently Asked Questions

• Will these aluminium caster blocks fit my TRX-4M? — Yes, these caster blocks are designed specifically for all Traxxas TRX-4M models including the Ford Bronco, Land Rover Defender, Chevrolet K10, Ford F-150, and both TRX-4MT Monster Truck variants. They are precision-machined Traxxas components that install directly into your existing suspension without requiring modification or additional parts.
• What performance improvement should I expect from upgrading to these aluminium caster blocks? — By lowering your TRX-4M's centre of gravity through strategic weight distribution, you'll notice improved anti-rollover stability when navigating steep slopes and banked terrain, enhanced traction management during technical rock crawling, and superior overall stability during high-angle climbs. The improvements are most noticeable when driving challenging terrain where roll risk is a factor.
• Are these genuine Traxxas parts? — Yes, these are authentic Traxxas components manufactured to the brand's exacting engineering standards. The part number TRX9733-BLUE confirms this is the official blue-anodised version, and purchasing from authorised Traxxas retailers in the UK guarantees you receive genuine products with full manufacturer support.
• How do these compare to plastic caster blocks? — Traxxas aluminium caster blocks offer several advantages over plastic alternatives: superior durability that resists cracking and breaking during rough trail running, precise dimensional stability that maintains steering geometry under load, lower weight compared to many plastic options, and better longevity through extended use in challenging conditions. The blue-anodised finish also provides genuine corrosion protection that plastic cannot match.
• Will upgrading to these caster blocks change my steering feel? — No. These components are precision-machined to preserve the TRX-4M's trail-tuned steering and suspension geometry exactly as Traxxas designed it. You'll gain stability and climbing capability without losing the responsive, predictable steering that makes the TRX-4M such a respected platform among UK RC crawler enthusiasts.
• Do I need any special tools to install these caster blocks? — Installation requires standard RC hobby tools (screwdrivers, hex keys). The caster blocks replace existing components, and detailed installation instructions are available from Traxxas or your authorised retailer. If you're unfamiliar with suspension work, many UK RC hobby shops can install these upgrades quickly and affordably.
• Are these caster blocks suitable for beginners? — These are advanced upgrade components best suited to experienced TRX-4M owners who understand suspension tuning and want to optimise their machine's performance. Beginners should focus on learning their stock TRX-4M before adding performance upgrades, though these are relatively straightforward to install once you're comfortable with basic suspension maintenance.

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 Caster blocks, 6061-T6 aluminium (Blue-anodised) (left & right) TRX9733-BLUE 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.