Z-S1866

Overview

The RC4WD 17MM MAD FORCE / 1/8 BUGGY UNIVERSAL HEX FOR 40 SERIES & CLOD WHEELS (Z-S1866) is a precision-engineered wheel adapter designed specifically for enthusiasts building or upgrading their 1/8 scale buggy and monster truck platforms. These universal hex adapters provide a robust interface between your axle and large 40 series beadlock wheels, making them an essential upgrade for serious RC car builders in the UK and beyond. Whether you're running a Kyosho Mad Force or planning a custom build, these CNC-machined adapters deliver the quality and reliability that RC hobbyists demand.

For anyone serious about RC buggy performance, the right components make all the difference. These 17mm hex adapters are manufactured by RC4WD, a brand synonymous with precision scaling and durability in the RC community. If you're upgrading your ready to run RC buggy or building a competition-grade machine, these universal hexes ensure your wheels are securely mounted whilst maintaining the scale appearance and functional integrity that separates a quality build from an average one. Available now from RC Model Shop, these are the hexes chosen by discerning RC car enthusiasts across the UK.

The combination of billet aluminium construction and precision CNC machining means these hexes won't let you down on the track, trail or rock garden. Each pair arrives with all the fasteners you need to get your wheels mounted immediately, saving you time sourcing compatible hardware. This is the kind of attention to detail that RC enthusiasts appreciate when investing in their hobby.

Key Features

• CNC Machined Billet Aluminium Construction — These adapters are precision-machined from solid billet aluminium rather than cast or stamped, which guarantees superior strength, consistency and durability under the demanding stresses of RC off-road driving and competition use.
• 17mm Hex Interface — The 17mm hex fitting is the industry standard for 1/8 scale buggies and monster trucks, ensuring compatibility with a wide range of aftermarket axles and drive shafts available in the RC car market.
• Universal Design for Multiple Platforms — These hexes work with the Kyosho Mad Force and are specifically engineered to fit 40 series and Clod Buster wheel applications, giving you flexibility in your build choices and allowing you to upgrade existing vehicles with quality components.
• Optimised Geometry and Dimensions — With an outer diameter of 35mm (1.5 inches), a centre hole OD of 5.20mm (0.20 inches), and a width of 17.50mm (0.69 inches), these adapters are precisely dimensioned to ensure proper wheel fitment and axle alignment on your RC buggy or monster truck.
• Lightweight Precision Engineering — At just 27.5 grams (0.97 ounces) per hex, the weight has been carefully controlled to minimise unsprung mass, which improves suspension response and overall handling characteristics in your RC vehicle.
• Complete Hardware Package Included — Each set includes all the socket head cap screws you need for installation: 2x M5 x 8mm fasteners and 12x M4 x 8mm fasteners in black steel, eliminating the need to hunt down compatible hardware.
• Kyosho Mad Force Compatibility — Specifically designed and tested for the Kyosho Mad Force platform, these hexes integrate seamlessly with this popular 1/8 scale buggy, though they are suitable for other compatible applications as well.

Technical Performance

These RC4WD universal hex adapters represent the kind of engineering excellence that serious RC car builders and competition drivers depend upon. Manufactured from billet aluminium through precision CNC machining processes, each hex adapter is built to exact tolerances that ensure perfect fitment with 17mm hex axles and shafts. The material choice is critical: billet aluminium offers the optimal balance between weight savings and structural rigidity, meaning your wheels stay securely mounted even during aggressive cornering, landings and high-speed runs. The 35mm outer diameter combined with the carefully calculated 17.50mm width ensures proper wheel clearance and alignment, whilst the 5.20mm centre hole diameter is engineered to match standard 17mm hex shaft specifications precisely. The relatively light weight of just 27.5 grams per hex minimises the rotating mass at each corner of your RC buggy or monster truck, which translates to faster acceleration, improved braking response and more agile handling characteristics. These are the kinds of performance gains that matter in competitive RC racing and serious off-road bashing. When paired with compatible 40 series beadlock wheels such as the RC4WD Huntsman Spider, Thorax, or Pro10 models, these hexes provide the foundation for a robust, reliable and visually impressive wheel package that performs as good as it looks.

What's in the Box

• 2x RC4WD 17MM Mad Force / 1/8 Buggy Universal Hex adapters for 40 Series and Clod Wheels
• 2x Steel Socket Head Cap Screws M5 x 8mm (Black finish)
• 12x Steel Socket Head Cap Screws M4 x 8mm (Black finish)

Frequently Asked Questions

• What vehicles are these 17mm hex adapters compatible with? — These hexes are designed specifically for 17mm hex applications on 1/8 scale buggies and monster trucks. They are confirmed compatible with the Kyosho Mad Force and are suitable for use with 40 series wheels and Clod Buster wheel setups. They will work with any vehicle platform featuring a 17mm hex axle or drive shaft, making them a versatile upgrade option across multiple RC platforms.
• Are these hexes suitable for beginners or only experienced builders? — Whilst these are precision components designed and manufactured to professional standards, their installation is straightforward enough for builders with basic mechanical skills. If you have experience assembling ready to run RC cars or performing simple maintenance and upgrades, you'll have no difficulty installing these hexes. However, they are perhaps most appreciated by experienced builders and competition drivers who recognise the value of precision-engineered components in their builds.
• What size wheels will these hexes accommodate? — These adapters are specifically engineered for 40 series wheels and Clod Buster compatible wheels. RC4WD manufactures several wheel options explicitly designed to work with these hexes, including the Huntsman Spider 3.8-inch Universal Beadlock Wheel, the Thorax 3.8-inch Universal Beadlock Wheel, and the Pro10 3.8-inch Steel Stamped Beadlock Wheel in black. You should verify wheel compatibility before purchase to ensure your chosen wheels feature the proper mounting interface.
• Why are these hexes better than standard plastic or stamped metal alternatives? — CNC machined billet aluminium construction offers several advantages over cheaper alternatives. Billet components maintain their tolerances more consistently over time, they resist bending and stripping better than stamped metal, and they're significantly more durable than plastic under the stresses of serious driving. For builders who care about precision, durability and long-term reliability, the investment in billet hexes pays dividends in reduced breakdowns and superior handling characteristics.
• Do I need any other parts to install these hexes? — All the fasteners required for installation are included in the package, so you'll need only basic tools: a socket set or hex key set appropriate for M4 and M5 fasteners. You will of course need compatible wheels and a vehicle platform with 17mm hex axles or shafts to complete your installation.
• Are these hexes waterproof or weather-resistant? — These are solid aluminium components with no seals or moving parts, so they are inherently weather-resistant. Aluminium naturally resists corrosion, making these hexes suitable for use in damp conditions or muddy terrain typical of UK RC bashers and off-road racing. However, like all metal components, they should be cleaned and dried after use in wet or salty conditions to maintain appearance and performance.

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 17MM MAD FORCE / 1/8 BUGGY UNIVERSAL HEX FOR 40 SERIES & CLOD WHEELS Z-S1866 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.