RC4WD King Off-Road Racing Shocks 70mm Pair 1/10 Scale Z-D0025

Overview

Upgrade your scale crawler's suspension with the RC4WD King Off-Road Racing Shocks 70mm (pair), part Z-D0025. These officially licensed shocks are engineered specifically for serious RC enthusiasts in the UK who demand authentic scale realism combined with genuine performance upgrades. Whether you're running a Traxxas TRX-4, RC4WD Gelande II, or any compatible scale crawler, these shocks represent a significant step up from standard suspension components, delivering the kind of refined damping and durability that competitive scale crawlers require.

Built from the ground up with a completely new design philosophy, the RC4WD King Off-Road Racing Shocks are purpose-built to handle rough and rocky terrain with the kind of finesse that separates serious hobbyists from casual bashers. These are not generic suspension components; they are officially licensed products that combine authentic King Off-Road branding with engineering that reflects the real-world shock absorber technology that inspired them. The pair comes ready to bolt up and upgrade your scale build, transforming the way your RC car handles obstacles and uneven ground.

For anyone serious about scale crawler performance in the UK RC hobby scene, these shocks offer exceptional value and authenticity. The machined billet aluminium construction, coupled with titanium nitride coated shock shafts and advanced X-ring gasket technology, ensures these components will provide years of reliable service while maintaining that scale-accurate appearance that discerning modellers demand.

Key Features

• Machined Billet Aluminium Construction — Every shock is precision-machined from solid billet aluminium, providing superior rigidity and durability compared to cheaper cast alternatives. This manufacturing approach ensures consistent quality, precise tolerances, and a professional appearance that reflects the attention to detail expected in serious scale builds.
• King Laser Etched Branding — The top cap and retainer ring feature authentic King laser etching, providing genuine scale realism that makes your RC crawler look like it features actual King Off-Road Shocks. This attention to cosmetic detail is essential for builders who want their scale models to be as visually accurate as they are mechanically capable.
• Dual Spring Design — The dual spring system provides superior damping characteristics and allows for more refined suspension tuning across different terrain types. This engineering approach enables better bump absorption and smoother overall suspension behaviour, translating to improved traction and control on rocky, uneven ground.
• X-Ring Gaskets with Double Oil Seals — Unlike single-seal designs, the X-ring gaskets provide double oil seals within the shock cartridge, preventing oil leakage and maintaining consistent damping performance over extended use. This advanced sealing technology is critical for long-term reliability and ensures your shocks maintain their performance characteristics even after intensive use.
• Titanium Nitride Coated Shock Shafts — The TiN coating dramatically extends shaft longevity by providing exceptional wear resistance and corrosion protection. This coating is harder than standard steel and resists scratching and oxidation, meaning your shocks will maintain smooth operation and aesthetic appeal for years longer than uncoated alternatives.
• Comprehensive Spacer Kit Included — The package includes multiple X-ring spacers (2.7mm and 2.5mm variants) allowing fine-tuning of damping characteristics. The 2.7mm spacer provides maximum sealing compression for stiffer response, whilst the 2.5mm alternative allows easier shaft movement through the X-rings for a softer, more compliant setup.
• White Shaft Guides — Included shaft guides help maintain proper alignment and reduce friction, ensuring consistent damping and preventing binding or harsh spots in the suspension travel.
• King Decal Sheet — An authentic King decal sheet is included, allowing you to further customise and personalise your build with official branding.

Technical Performance

These shocks represent serious engineering designed specifically for scale crawler applications. With an uncompressed hole-to-hole measurement of 70mm and a compressed measurement of 57mm, they deliver 13mm of travel that's appropriate for scale realism without sacrificing practical performance. The 80mm overall length positions them perfectly for most modern crawler designs, whilst the shock body outer diameter of 14.6mm and shaft outer diameter of 3.9mm provide the refined proportions expected of scale components. At just 17.5 grams each, these shocks add minimal unsprung weight whilst delivering substantial performance improvements. The titanium nitride coating on the shock shafts represents a professional-grade treatment typically found on competition-level shock absorbers, ensuring the shafts resist wear and maintain smooth operation over thousands of compression and extension cycles. The X-ring gasket system with dual oil seals provides damping consistency that far exceeds basic shock designs, particularly important for scale crawlers that may see hours of use over demanding terrain. The dual spring design works in concert with the X-ring system to provide progressive damping characteristics, meaning initial impacts are absorbed gently whilst continued compression is progressively resisted, improving both control and traction. This is genuine performance engineering, not cosmetic enhancement alone.

What's in the Box

• 2 x RC4WD King Off-Road Racing Shocks (70mm uncompressed length)
• 2 x White shaft guides for proper alignment and reduced friction
• 4 x 3 x 5.5 x 2.7mm black spacers (for maximum sealing compression)
• 2 x 3 x 5.5 x 2mm black spacers (for easier shaft movement)
• 1 x King decal sheet for customisation and authenticity

What You Need to Complete

• Silicone shock oil (recommended for optimal damping performance and recommended to fill the shocks before use)
• Thick shock grease for application to X-ring gaskets (essential for maintaining seal integrity and damping consistency)
• Compatible RC crawler platform (Traxxas TRX-4 variants, RC4WD Gelande II variants, or Traxxas TRX-6 Mercedes-Benz G 63 6x6)

Compatibility and Installation Notes

These shocks feature ball ends that provide direct compatibility with Traxxas TRX-4 axle and shock hoop mounts, making installation straightforward for TRX-4 users. Compatible models include the Traxxas TRX-4 Land Rover Defender, Traxxas TRX-4 '79 Bronco Ranger XLT, Traxxas TRX-4 Sport Kit, Traxxas TRX-4 Sport, Traxxas TRX-4 Crawler Kit, Traxxas TRX-4 Mercedes-Benz G 500 4x4, and Traxxas TRX-4 Chevrolet K5 Blazer. The shocks also fit RC4WD Gelande II variants including RTR models with 2015 Land Rover Defender D90 Body Sets (both Autobiography Limited Edition and Heritage Edition), RTR Truck with Cruiser Body Set in red, and various Gelande II Truck Kit configurations. They are also compatible with the Traxxas TRX-6 Mercedes-Benz G 63 6x6 for those building 6-wheel scale crawlers. For Axial SCX10-3 builds, use a 5mm black spacer with M3 hole (part number Z-S0821) on the shock tower to ensure proper fitment and performance. Installation is straightforward, involving removal of the original shocks and installation of these units into existing shock mounts, though proper preparation and filling with shock oil is essential before use.

Frequently Asked Questions

• Are RC4WD King Off-Road Racing Shocks suitable for my Traxxas TRX-4 crawler? — Yes, these shocks are specifically designed with compatibility in mind for Traxxas TRX-4 platforms. The ball ends provide a direct fit to TRX-4 axle and shock hoop mounts, making installation straightforward. They are compatible with virtually all TRX-4 variants including the Land Rover Defender, '79 Bronco Ranger, Sport models, and Chevrolet K5 Blazer, though always verify your specific model against the compatibility list before purchase.
• Do I need to fill these shocks with oil before using them? — Yes, these shocks are supplied completely empty and must be filled with silicone shock oil before use. Additionally, thick shock grease should be applied to the X-ring gaskets to ensure proper sealing and damping performance. This is a critical preparation step; shocks used without proper oil fill will not function correctly and may be damaged. Silicone shock oil is not included and must be purchased separately.
• What is the difference between the 2.7mm and 2.5mm spacers included? — The 2.7mm spacer provides maximum sealing compression and is pre-installed as the standard setup, offering stiffer damping characteristics and maximum resistance to oil leakage. The 2.5mm spacer can be substituted if you prefer easier shaft movement through the X-rings, resulting in softer, more compliant suspension action. The choice between them allows you to fine-tune the suspension to match your preferred driving style and terrain conditions.
• How do these shocks compare to standard crawler suspension? — These are significant upgrades over standard suspension, featuring titanium nitride coated shafts that resist wear far better than uncoated alternatives, dual oil seals in the X-ring gasket system versus single seals in basic designs, and a refined dual spring design that provides progressive damping. The machined billet aluminium construction also ensures tighter tolerances and superior durability compared to cheaper alternatives. They are authentic licensed products that deliver both performance and scale realism.
• Will these shocks work on an RC4WD Gelande II? — Yes, these shocks feature comprehensive compatibility with multiple RC4WD Gelande II variants including RTR models with Land Rover Defender D90 bodies in both Autobiography and Heritage editions, RTR Truck with Cruiser body sets, and various Gelande II kit configurations. Always verify your specific model variant against the detailed compatibility list provided.
• Are these shocks recommended for beginners? — Whilst these are high-quality, professional-grade shocks suitable for serious crawlers, they require some mechanical knowledge to prepare and install correctly. You will need to obtain shock oil and grease separately and have the knowledge to properly fill and bleed them. For complete beginners, starting with a ready-to-run crawler with standard suspension might be more appropriate, but intermediate hobbyists should find installation and preparation manageable with basic mechanical skills.
• How much travel do these shocks provide? — Each shock provides 13mm of travel (compressed hole-to-hole measurement 57mm, uncompressed 70mm), which is appropriate for realistic scale crawler setups whilst still providing practical suspension articulation for off-road performance. This travel is calibrated for scale accuracy whilst maintaining genuine performance capability.
• What makes the titanium nitride coating important? — Titanium nitride coating makes the shock shafts significantly harder and more wear-resistant than standard steel, preventing scratches, corrosion, and oxidation. This coating treatment extends component longevity substantially, meaning your shocks will maintain smooth operation and visual appeal for many years of active use, making it a worthwhile investment in long-term reliability.

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 RC4WD KING OFF-ROAD RACING SHOCKS 70MM (PR) Z-D0025 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.