- Brand: RC Overhaul
- Model Number: G-RCO-AR020
- EAN: 5055320230588
- Product Type: Replacement Spur Gear
- Spur Gear Teeth: 57T
- Spur Gear Size: Same as stock 57T specification
- Gear Construction: Metal
- Locating Lugs: Yes
- Component Category: Transmission Tune-Up
- Compatibility: ARRMA 4S vehicles
- Compatible Models: Arrma 1/10 Kraton 4X4 4S V2 BLX Speed Monster Truck RTR (Green), Arrma 1/10 Kraton 4X4 4S V2 BLX Speed Monster Truck RTR, Arrma 1/8 Mojave 4X4 4S BLX Desert Truck RTR (Blue), Arrma 1/8 Mojave 4X4 4S BLX Desert Truck RTR (White), Arrma 1/10 OUTCAST 4X4 4S V2 BLX Stunt Truck RTR (Red), Arrma 1/10 OUTCAST 4X4 4S V2 BLX Stunt Truck RTR (Gunmetal)
- Contents: 1x 57T metal spur gear only
- Differential Not Included: Gear must be installed into existing vehicle differential housing
- Installation: Direct replacement requiring no modifications
Overview
The RC Overhaul Metal Spur Gear 57T, 4S (G-RCO-AR020) is an essential replacement component for owners of ARRMA 4S RC vehicles. Whether you're running an ARRMA Kraton, OUTCAST, or Mojave 4S, this precision-engineered metal spur gear is designed to keep your drivetrain performing at its best. As a dedicated UK RC car retailer, we understand that maintaining your RC model is just as important as the initial purchase, and this genuine replacement gear is exactly what you need for routine maintenance, repairs, or performance tuning of your brushless RC monster truck or desert truck.
This metal spur gear matches the original equipment specification with a 57-tooth design, making it a direct replacement for stock components in ARRMA 4S platforms. The inclusion of locating lugs ensures a precise, secure fit every time, eliminating any uncertainty during installation. Whether you're a serious competitor looking to keep your RC buggy in peak condition or a weekend basher who wants reliable spares on hand, this is the kind of dependable upgrade that separates well-maintained RC vehicles from those that suffer from wear and inconsistent performance.
Built to the same quality standards as the original manufacturer components, this metal construction spur gear delivers the durability and precision you'd expect from a recognised upgrade brand. For RC enthusiasts across the UK seeking quality spares and tune-up options for their ARRMA fleet, the RCO Metal Spur Gear represents genuine value and peace of mind.
Key Features
- 57-Tooth Metal Spur Gear — This gear maintains the same tooth count as the factory stock specification, ensuring your vehicle retains its original performance characteristics whilst benefiting from the superior durability of metal construction over plastic alternatives.
- Locating Lugs for Precise Fit — The integrated locating lugs provide positive positioning and alignment with your drivetrain, eliminating play and ensuring that gear mesh is perfectly calibrated every single time you install this component.
- Metal Construction — Manufactured from durable metal rather than plastic, this spur gear resists wear far more effectively than stock components, making it an ideal choice for high-use vehicles or those subjected to aggressive driving conditions.
- Direct Replacement for ARRMA 4S — Engineered specifically for ARRMA 4S platforms including the Kraton 4X4 V2, OUTCAST 4X4 V2, and Mojave 4X4 models, this gear drops in as a straightforward swap with no modifications required.
- Transmission Tune-Up Component — Classified as a transmission tune-up option, this gear allows you to maintain or upgrade your drivetrain performance as part of a broader vehicle maintenance or customisation programme.
Technical Performance
The RC Overhaul Metal Spur Gear 57T is engineered specifically for ARRMA's 4S brushless RC platform, which typically features high-torque brushless motors delivering substantial power to the drivetrain. The 57-tooth specification maintains the factory gear ratio, preserving the performance balance between acceleration and top speed that ARRMA engineers designed into these vehicles. The metal construction is particularly important in 4S applications where brushless motors deliver consistent, sustained power output that places significant stress on drivetrain components. Unlike plastic gears which can strip, crack or wear unevenly under this pressure, metal spur gears distribute load more effectively across all teeth, extending component life and maintaining consistent mesh with the pinion gear. The locating lugs work in conjunction with the spur gear housing to ensure concentricity and eliminate radial run-out, which is critical for smooth power delivery and reduced drivetrain noise. This makes the RCO Metal Spur Gear an excellent choice for those running their ARRMA 4S vehicles regularly, whether in rock crawling, high-speed bashing, or competitive settings. The component has been validated for use across multiple ARRMA 4S platforms including 1/10 scale Kraton and OUTCAST models as well as the larger 1/8 scale Mojave, demonstrating its versatility within the 4S ecosystem.
What's in the Box
- 1x RC Overhaul Metal Spur Gear 57T
What You Need to Complete
- Differential assembly — the spur gear is supplied as a gear component only and must be installed into your existing vehicle differential housing
- ARRMA 4S RC vehicle compatible with this replacement gear (Kraton 4X4 4S, OUTCAST 4X4 4S, or Mojave 4X4 4S)
Frequently Asked Questions
- Is the RC Overhaul Metal Spur Gear 57T suitable for my ARRMA 4S RC vehicle? — Yes, this gear is specifically engineered for ARRMA 4S platforms. It is confirmed compatible with the Kraton 4X4 4S V2 (both RTR and BLX variants), the OUTCAST 4X4 4S V2, and the Mojave 4X4 4S. If you own one of these models, this is a direct replacement that requires no modification to fit.
- Why should I upgrade to a metal spur gear instead of using the plastic stock gear? — Metal spur gears offer significantly greater durability and longevity compared to plastic alternatives. They resist stripping, cracking and wear far more effectively, making them ideal if you run your RC vehicle frequently or in demanding conditions. The improved gear mesh quality also reduces noise and drivetrain vibration, resulting in smoother, more refined vehicle operation.
- Does this spur gear come with the differential? — No, this product includes the 57-tooth metal spur gear only. The gear must be installed into your existing vehicle differential housing. Images showing a complete differential assembly are provided for illustrative purposes only and do not reflect what is included in this package.
- How does the 57-tooth specification affect my RC vehicle's performance? — The 57-tooth count matches the factory specification, so this gear maintains the original gear ratio that ARRMA engineered into your vehicle. This means you retain the performance characteristics of your RC model without changing acceleration or top-speed balance. If you were to use a different tooth count, you would alter this ratio and affect how your vehicle performs.
- Will this fit my specific ARRMA 4S model? — This gear is confirmed compatible with multiple ARRMA 4S variants including the 1/10 Kraton 4X4 4S V2 BLX (both Green and Gunmetal RTR versions), the 1/10 OUTCAST 4X4 4S V2 BLX (Red and Gunmetal RTR versions), and the 1/8 Mojave 4X4 4S BLX (both Blue and White RTR versions). If you own one of these models, compatibility is guaranteed.
- What is the benefit of the locating lugs? — The locating lugs on this spur gear ensure perfect alignment and positioning within your differential housing, eliminating play and ensuring consistent, precise gear mesh with the pinion. This results in more efficient power transfer, reduced noise, and more predictable vehicle handling and performance.
- Can beginners install this gear themselves? — Yes, this is a straightforward maintenance task suitable for beginners with basic mechanical aptitude. You will need to access your vehicle's differential, which typically requires removing the vehicle body and a few fasteners. If you are uncertain about the process, our team at RC Model Shop can offer guidance, and many RC clubs and online communities provide detailed installation guides for ARRMA vehicles.
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 RCO Metal Spur Gear 57T, 4S G-RCO-AR020 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.
