Traxxas Outer Driveline & Suspension Upgrade Kit, extreme heavy duty, Green (fits Slash 2WD) TRX9181-GRN

Overview

Transform your Traxxas 2WD Slash or Raptor into an unstoppable bashing machine with the Extreme Heavy Duty Outer Driveline & Suspension Upgrade Kit in striking green. This comprehensive upgrade package is engineered specifically for brushless RC power systems, making it the ultimate choice for serious RC enthusiasts across the UK who demand battle-hardened durability and uncompromising performance. Whether you're a weekend basher at your local skate park, a speed-run competitor, or simply someone who loves to push their ready to run RC truck to its absolute limits, this kit delivers the reinforced strength and engineering precision needed to survive the most punishing driving conditions.

The Extreme Heavy Duty Upgrade Kit represents Traxxas's commitment to giving drivers the tools they need to go harder, faster, and higher without constantly replacing broken parts. This is not a minor tweak or cosmetic upgrade – it's a complete transformation of your truck's outer driveline and suspension system, with every component engineered to work together as a unified, high-performance package. The kit installs without modification on compatible 2WD Slash and 2WD Raptor models, making it an accessible upgrade for anyone looking to enhance their existing RC truck.

Available in eye-catching green and designed to complement existing aluminium accessories, this upgrade kit delivers professional-grade durability at an accessible price point. For RC car enthusiasts in the UK seeking to maximise their truck's lifespan and reliability whilst maintaining the perfect balance of performance and value, the Extreme Heavy Duty Upgrade Kit is an essential investment that will keep your RC truck performing at its best through years of intense use.

Key Features

• Extreme Heavy Duty Driveshafts — The complete redesign of the driveline system features large-diameter half shafts with 6 mm stub axles and massive universal joints that are substantially larger than stock components, providing superior strength and reliability under brushless motor power whilst resisting twisting to deliver maximum grip and traction in high-traction conditions.
• Advanced Spline Design — The Extreme Heavy Duty driveshafts utilise ten curvilinear splines instead of the stock four square splines, which distributes load more evenly across each individual spline, resulting in dramatically greater durability, longer shaft life, and smooth telescoping action even under extreme power delivery.
• 20% Larger Sealed Bearings — The rubber-sealed outer bearings are specifically enlarged compared to stock parts, delivering greater strength, extended operational life, and low-drag operation that keeps your truck running smoothly and efficiently through countless bashing sessions.
• Heavy Duty Caster and Steering Blocks — Moulded with 50% more composite material than standard blocks, these reinforced front-end components are engineered to absorb impacts and withstand the aggressive driving forces generated by brushless power systems without flexing or breaking.
• Ultra-Reinforced Rear Hub Carriers — The rear axle carriers utilise an astounding 200% more material than stock components, with sealed bearings integrated throughout for ultimate durability, precision fit, and resistance to the extreme stresses of fast acceleration and hard cornering.
• Heavy Duty Front and Rear Suspension Arms — Constructed from Traxxas's toughest composite material, these reinforced arms provide the perfect balance of strength and controlled flex to resist breaking under punishment whilst maintaining excellent shock absorption and handling characteristics.
• Redesigned Shock Towers — The shock tower geometry has been revised specifically to accommodate the larger Extreme Heavy Duty driveshafts, with raised camber link mounting points ensuring perfect clearance and maintaining ideal suspension geometry for maximum performance.
• Steel Rear Wheel Hexes — Upgraded to steel construction for enhanced durability and resistance to stripping, these hexes reliably transfer power to your rear wheels even during the most aggressive acceleration and cornering manoeuvres.
• One-Piece HD Camber and Toe Links — These integrated suspension links provide rigid, responsive handling geometry that maintains precision alignment through rough terrain and aggressive driving whilst resisting the flex and wear associated with separate link designs.
• Complete Hardware Package — Every bolt, fastener, and mounting component needed for installation is included, eliminating the need to hunt for parts or make substitutions with inferior hardware.
• Compatible with Existing Accessories — The kit works seamlessly with your existing aluminium accessories, allowing you to upgrade your driveline and suspension without requiring additional component replacements or modifications.

Technical Performance

The Extreme Heavy Duty Upgrade Kit represents a quantum leap in engineering sophistication compared to stock driveline and suspension systems. Every component has been specifically redesigned to handle the immense power output of brushless RC motor systems whilst maintaining the precision and reliability demanded by serious RC enthusiasts. The large-diameter driveshafts featuring ten curvilinear splines are a masterclass in load distribution engineering – by spreading power across ten contact points rather than four, each individual spline carries significantly less load, dramatically reducing wear rates and extending component lifespan through countless bashing sessions. The 20% increase in bearing size directly translates to lower operating temperatures, reduced friction losses, and extended bearing life under continuous high-speed operation. The moulded suspension components, with their 50% increase in material mass for front components and extraordinary 200% increase for rear carriers, provide the structural rigidity necessary to maintain tight suspension geometry even when repeatedly subjected to massive vertical impacts and lateral g-forces. The redesigned shock towers with raised camber link mounting points ensure that your suspension maintains perfect geometry regardless of driveshaft angle or articulation, optimising handling balance and tyre contact throughout your driving sessions. Whether you're powering through dirt trails at maximum throttle, launching off jumps at the skate park, or attacking speed runs on open ground, this kit's engineering excellence ensures that your truck remains responsive, reliable, and ready for more punishment.

What's in the Box

• Heavy duty caster blocks (pair)
• Heavy duty steering blocks (pair)
• Heavy duty hub carriers (front and rear)
• Extreme Heavy Duty driveshafts (complete set)
• Heavy duty front suspension arms
• Heavy duty rear suspension arms
• One-piece heavy duty camber links
• One-piece heavy duty toe links
• Steel rear wheel hexes
• Sealed outer bearings
• Heavy duty shock towers
• Complete hardware and fastener package
• Body mounts

Frequently Asked Questions

• Will this Extreme Heavy Duty kit fit my Traxxas Slash 2WD? — Yes, the kit is specifically engineered for the 2WD Slash and 2WD Raptor models and installs without any modifications to your truck. Simply follow the installation instructions (approximately 30 minutes at your workbench) and your truck will be transformed. Note that this kit is designed for 2WD models only and is not compatible with 4WD variants, Rustler 2WD, or Stampede 2WD models.
• Is this upgrade suitable for brushless motor systems? — Absolutely. The Extreme Heavy Duty kit is specifically engineered for brushless power systems and features heavy-duty components throughout to handle the high torque and acceleration generated by brushless motors. The larger driveshafts, reinforced suspension arms, and upgraded bearings are all designed to work together as a complete package optimised for brushless performance.
• What makes the Extreme Heavy Duty driveshafts better than standard shafts? — The Extreme Heavy Duty driveshafts feature several revolutionary improvements: they use large-diameter half shafts with 6 mm stub axles and massive universal joints, ten curvilinear splines instead of four square splines for superior load distribution, and enhanced construction that resists twisting to deliver maximum power directly to your tyres. These advanced splines mean each individual spline carries less load, resulting in dramatically longer shaft life and greater durability during aggressive driving.
• Can I mix and match components from this kit with my existing parts? — The Extreme Heavy Duty kit is engineered to work together as a complete package with perfect precision fit between all components. However, the all-inclusive design means every component you need is included, and the kit is compatible with existing aluminium accessories, so you don't need to source additional parts. Note that Extreme HD components are not compatible with aluminium caster blocks, steering blocks, or axle carriers from other upgrade kits.
• How much harder is this kit to install compared to stock parts? — Installation is straightforward and requires approximately half an hour of bench work. The kit comes with all necessary hardware and installation is designed to be simple enough that anyone with basic mechanical skills can complete it. A full installation how-to guide is available from Traxxas to walk you through each step.
• What colours are available for the Extreme Heavy Duty kit? — The Extreme Heavy Duty Upgrade Kit is available in multiple striking colours including green (this model), blue, red, orange, and black. You can customise your truck's appearance whilst upgrading its durability, allowing you to express your style alongside your performance upgrades.
• Are individual components available separately if I damage a part? — Yes, all of the moulded parts from the Extreme Heavy Duty kit – including the caster blocks, steering blocks, hub carriers, shock towers, and suspension arms – are available separately for purchase should you need to replace a damaged component. This modular approach means you can mix colours or replace individual parts without purchasing an entire new kit.
• How much stronger are the rear hub carriers compared to stock parts? — The Extreme Heavy Duty rear hub carriers utilise 200% more material than stock components – double the composite material. This extraordinary increase in material mass, combined with integrated sealed bearings, creates carriers that can withstand the extreme stresses generated by high-powered brushless systems and the most aggressive driving styles.
• Will this kit work with my existing shock absorbers and other truck components? — Yes, the Extreme Heavy Duty kit is designed to work with your existing components as much as possible. The redesigned shock towers have been specifically engineered to accommodate the larger Extreme Heavy Duty driveshafts with raised camber link mounting points for proper clearance. The kit works seamlessly with existing aluminium accessories and your current shocks.

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 Outer Driveline & Suspension Upgrade Kit, extreme heavy duty, Green (fits Slash 2WD) TRX9181-GRN 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.