Z-S1864

Overview

The RC4WD XVD for Cast K44 Front Axle (Z-S1864) is an essential upgrade component designed for scale RC enthusiasts and serious crawlers looking to enhance their K44 axle setup with precision steering and exceptional durability. Whether you're building a competition-grade scale crawler or upgrading an existing RC 4WD model, this XVD set delivers the performance and reliability that discerning RC car UK builders demand. RC4WD has engineered these universal joints with meticulous attention to detail, combining professional-grade manufacturing techniques with premium materials to ensure your front axle assembly performs flawlessly in the most demanding scale scenarios.

XVD stands for extreme velocity differential, but in this application, the term refers to the universal joint set that transmits power and steering inputs with minimal loss and maximum precision. These are not merely replacement parts—they represent RC4WD's commitment to creating authentic scale driveline components that replicate real-world engineering while delivering the durability required for countless scale driving sessions. If you're serious about your RC crawler and want steering feel that responds precisely to your inputs without bind or flex, the Z-S1864 XVD set is exactly what your K44 axle needs. Built from heat-treated hardened steel and manufactured using CNC machining techniques, every component in this set meets exacting tolerances that ensure smooth operation and longevity.

This product is ideal for builders upgrading their K44 Ultimate Scale axles, whether you're running a 1/10 scale rock crawler, a competition-grade short course truck, or any other RC vehicle that utilises the K44 platform. The 50-degree steering angle provided by this XVD set allows for the extreme articulation and manoeuvrability that makes scale crawling and technical driving so rewarding. Installation is straightforward for anyone with basic RC mechanical knowledge, making this an excellent choice for intermediate to advanced RC hobbyists looking to fine-tune their setup without specialist tools or expertise.

Key Features

• CNC Machined Construction — Every component is manufactured using precision computer numerical control machining, ensuring consistent tolerances and perfect fitment across both left and right XVD units, which eliminates play and delivers responsive steering feel that directly translates to better control over your RC crawler or truck.
• Hardened Steel Material — The XVD set is manufactured from hardened steel that has been subjected to heat treatment processes, creating a material that resists wear, deformation and fracture even under the extreme forces generated during aggressive off-road driving, climbing obstacles and rapid directional changes.
• Heat Treated for Durability — The heat treatment process strengthens the steel at a molecular level, providing exceptional resistance to fatigue and impact damage, which means you can drive with confidence knowing your driveline components are built to withstand the punishment that scale RC driving delivers.
• Easy Installation — Designed to fit seamlessly into existing K44 axle assemblies, the Z-S1864 XVD set requires no modification or specialist tools, allowing you to upgrade your RC car UK setup in an afternoon and immediately enjoy the improved steering response and reliability benefits.
• Impressive 50-Degree Steering Angle — This extreme steering angle is essential for crawling tight terrain features, executing precise directional control in confined spaces and achieving the kind of manoeuvrability that separates novice drivers from experienced competitors in the world of scale RC driving.
• Extremely Durable Design — Every aspect of this XVD set has been engineered for longevity, from the hardened steel construction to the precision manufacturing tolerances, ensuring that you can enjoy hundreds of hours of driving without experiencing bind, flex or degradation in steering response.
• Lightweight Optimisation — At just 1.29 ounces total weight across both components, the Z-S1864 XVD set adds minimal mass to your front axle assembly, helping maintain the weight distribution and handling characteristics you've carefully tuned into your RC crawler or truck platform.

Technical Performance

The RC4WD XVD for Cast K44 Front Axle represents the pinnacle of scale RC engineering, combining materials science, precision manufacturing and performance-focused design into a component set that transforms how your K44 axle handles steering inputs and power transmission. The use of hardened steel that has been through heat treatment processes creates an exceptionally strong material that can withstand the repetitive stress and impact forces generated during typical RC off-road driving, climbing obstacles and executing tight directional manoeuvres. Each XVD unit is individually CNC machined to exacting tolerances, meaning the left and right components fit together perfectly and operate in harmonious synchronisation to deliver steering that feels responsive, smooth and completely free from binding or play. The asymmetrical design—with the left XVD measuring 4.23 inches (107.50 millimetres) and the right measuring 3.40 inches (86.32 millimetres)—accommodates the geometry requirements of modern K44 front axle assemblies whilst maintaining perfect alignment and range of motion. The 50-degree steering angle capability is a standout specification that allows experienced RC drivers to execute the kind of extreme articulation required for climbing steep obstacles, navigating tight technical terrain and achieving the precision control that competition-grade scale crawling demands. Build quality is absolutely first-class throughout, with every component finished to a standard that would be expected of genuine OEM replacement parts, yet priced accessibly enough for hobby builders and enthusiasts to upgrade their rigs without significant financial outlay. Installation requires no modification to your existing K44 axle assembly, meaning you can upgrade your RC car UK setup and immediately begin enjoying the benefits of improved steering response, reduced friction and enhanced durability without any downtime or complications.

What's in the Box

• 1x XVD for Cast K44 Front Axle (Left)
• 1x XVD for Cast K44 Front Axle (Right)

Compatibility

• K44 Ultimate Scale Cast Front Axle (Z-A0101)
• K44 Ultimate Scale Front Axle (Z-A0048)

Frequently Asked Questions

• What exactly is an XVD and why does my K44 axle need one? — An XVD is a universal joint component that transmits power and steering inputs from your steering servo and drivetrain to the wheels of your RC crawler or truck. The RC4WD XVD set (Z-S1864) provides smoother, more precise steering response with less binding and flex compared to standard components, which is particularly important for scale crawling where precise directional control directly impacts your ability to navigate technical terrain features and obstacles.
• Is the RC4WD XVD for Cast K44 Front Axle suitable for beginners? — This product is best suited to intermediate and advanced RC builders who already have experience maintaining and upgrading K44 axle assemblies. Installation is straightforward and requires only basic RC mechanical skills, but you should already be familiar with your K44 platform before attempting this upgrade.
• Which K44 axles does the Z-S1864 fit? — The RC4WD XVD for Cast K44 Front Axle is specifically designed to fit the K44 Ultimate Scale Cast Front Axle (Z-A0101) and the K44 Ultimate Scale Front Axle (Z-A0048). It will not fit other axle platforms or K44 rear axle assemblies, so verify your current axle model before purchasing.
• How much does this XVD set weigh and will it affect my RC car's handling? — The complete Z-S1864 XVD set weighs just 1.29 ounces (36.5 grams), which represents minimal weight addition to your front axle assembly. This lightweight design ensures that upgrading to the RC4WD XVD set will not negatively impact weight distribution or handling characteristics, and the improved steering precision will typically enhance overall driving feel.
• What makes the 50-degree steering angle important for RC crawling? — The 50-degree steering angle allows extreme articulation that is essential for navigating tight technical terrain, climbing steep obstacles at angles that would otherwise be impossible, and executing the kind of precise directional control that separates competitive scale crawlers from standard RC vehicles. This extreme range of motion is particularly valuable in competition scenarios and challenging terrain features.
• Is installation difficult and will I need specialist tools? — Installation is designed to be straightforward and requires no modification to your existing K44 axle assembly. You will need basic RC mechanical tools such as hex wrenches and possibly a small screwdriver, but no specialist equipment or technical knowledge beyond standard RC maintenance is required.
• Why choose RC4WD XVD over standard K44 components? — RC4WD's XVD set delivers superior precision steering through CNC machining, increased durability through hardened heat-treated steel construction, and the impressive 50-degree steering angle that expands your RC crawler's capabilities. These advantages make the Z-S1864 essential for any serious scale RC builder looking to optimise their K44 setup for competition or challenging terrain driving.

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 XVD FOR CAST K44 FRONT AXLE Z-S1864 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.