Overview
The ARRMA Steel Diff Outdrive (2) Z-ARA310913 is an essential replacement and upgrade component designed specifically for the ARRMA 1/5 Kraton 4X4 8S BLX EXB Brushless Monster Truck and ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck. These premium steel differential outdrives are manufactured by ARRMA, a leading name in high-performance RC vehicles in the UK and globally. Whether you're a seasoned RC enthusiast looking to maintain your monster truck, an RC car UK collector, or someone who wants to enhance the durability of their ready to run RC model, these steel outdrives deliver exceptional performance and longevity.
As a drivetrain spare part, the Steel Diff Outdrive set plays a crucial role in the transmission system of your brushless RC monster truck. These components transfer power from the differential to the wheels whilst maintaining precise drive engagement. The steel construction provides superior strength compared to standard plastic alternatives, making them ideal for high-performance driving, competitive racing, and demanding off-road conditions. If you own one of the compatible ARRMA 8S models and want to upgrade your drivetrain for maximum reliability, this is an excellent choice for any RC enthusiast in the UK seeking quality spare parts.
This pair of steel outdrives represents genuine ARRMA engineering and manufacturing standards, ensuring perfect fit and compatibility with your existing monster truck platform. Whether you're replacing worn components or upgrading for enhanced performance, you're investing in parts that are trusted by RC competitors and weekend bashers alike across the United Kingdom.
Key Features
- Steel Construction — Manufactured from hardened steel rather than plastic, these outdrives offer significantly greater durability and strength, which translates to longer service life even under extreme driving conditions and high torque loads from brushless motors.
- Differential Compatibility — Specifically engineered as part of the differential drivetrain system, these outdrives ensure smooth power delivery from the central differential to the wheels, maintaining consistent traction and handling characteristics across all terrain types.
- OEM ARRMA Component — As genuine ARRMA spare parts manufactured to exact specifications, you can be confident that these outdrives will integrate perfectly with your Kraton or Outcast 8S without any fitment issues or compatibility concerns.
- Pair Supply — This package includes two outdrives, providing a complete set for both sides of your RC vehicle's drivetrain, ensuring balanced performance and symmetrical handling characteristics.
- High-Performance Upgrade — The steel material resists wear, stripping, and deformation far better than plastic alternatives, making this an ideal upgrade for owners who regularly push their brushless RC monster trucks to the limit.
- Essential Maintenance Part — For owners of the ARRMA Kraton 8S or Outcast 8S who engage in frequent bashing, racing, or high-speed driving, having replacement outdrives ensures you can quickly repair your vehicle and get back on the track or trail without extended downtime.
Technical Performance
The ARRMA Steel Diff Outdrive represents the pinnacle of drivetrain engineering for 1/5 scale brushless RC monster trucks and stunt vehicles. The steel construction provides exceptional tensile strength and resistance to the demanding forces generated by powerful brushless motor systems running on 8S LiPo batteries. Unlike plastic outdrives that can become stripped, cracked, or deformed under high torque loads, the hardened steel construction in this component maintains its dimensional integrity and engagement surface finish even after hundreds of driving hours. The precision manufacturing ensures that the outdrives mesh perfectly with the differential gears, eliminating play and dead spots that could compromise handling and power delivery. For owners of the ARRMA 1/5 Kraton 4X4 8S BLX EXB or ARRMA 1/5 Outcast 4X4 8S BLX EXB, upgrading to steel outdrives is a proven method of improving overall drivetrain reliability. The engineering specifications match ARRMA's original equipment standards exactly, ensuring that when installed, your vehicle performs identically to factory specification but with significantly enhanced durability. This is particularly important for brushless RC vehicles operating at high power levels, where drivetrain components experience substantially greater stress than in electric or nitro-powered competitors.
What's in the Box
- Steel Diff Outdrive (2 pieces)
Frequently Asked Questions
- Which ARRMA models are these steel outdrives compatible with? — These Z-ARA310913 steel outdrives are specifically designed for the ARRMA 1/5 Kraton 4X4 8S BLX EXB Brushless Monster Truck RTR and the ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck RTR. Before purchasing, verify your model number matches one of these two vehicles to ensure correct fitment.
- Why should I upgrade to steel outdrives from plastic? — Steel outdrives offer dramatically superior durability compared to the plastic components that come standard on many RC vehicles. Steel resists stripping, cracking, and deformation under high torque loads, meaning you'll experience fewer drivetrain failures, longer component lifespan, and better overall reliability. This is especially important if you regularly bash your brushless RC monster truck hard or compete in racing events.
- Are these genuine ARRMA parts? — Yes, the Z-ARA310913 is a genuine ARRMA original equipment spare part manufactured to exact factory specifications. You can trust the quality and compatibility of these components with your ARRMA vehicle.
- How often should I replace my outdrives? — With proper maintenance, steel outdrives can last for thousands of kilometres of driving. However, if you notice your vehicle has difficulty engaging drive, hear grinding noises, or experience power loss, your outdrives may be worn or damaged and require replacement. Inspect them regularly if you drive aggressively.
- Do I need any tools to install these outdrives? — Installation typically requires standard RC tools such as hex drivers and socket drivers to access and remove the old outdrives and install the new steel versions. Refer to your ARRMA Kraton or Outcast manual for detailed installation instructions specific to your model.
- Are these parts suitable for beginners with RC cars UK? — These are replacement and upgrade components designed for users who already own the compatible ARRMA monster trucks. If you're new to RC, these parts make an excellent investment once you've gained experience with your vehicle and want to enhance its durability and 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 ARRMA Steel Diff Outdrive (2) Z-ARA310913 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.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
