Overview
The Fastrax ARRMA Grom/Granite/Mojave Metal Complete Differential (FTAR063) is an essential upgrade component for owners of ARRMA's popular small-scale 4WD monsters and desert trucks. Whether you're running an ARRMA Granite Grom, Mojave Grom, or any compatible model, this metal differential assembly delivers improved durability and performance over standard plastic alternatives. Perfect for enthusiasts looking to enhance their RC car UK collection with high-quality spare parts, this component represents a significant upgrade that serious bashers and racers have come to trust.
If you're a dedicated RC car hobbyist who demands reliability and longevity from your small-scale vehicles, the Fastrax metal differential is engineered to withstand demanding conditions and repeated use. This complete differential unit is designed as a direct replacement or upgrade component, making it an ideal addition to your spares collection or a critical repair part when your existing differential needs replacement. Built to Fastrax's exacting standards, it combines precision engineering with robust construction to keep your ARRMA truck running at its peak.
The metal construction of this differential represents a substantial improvement over plastic components, offering superior wear resistance and durability during extended bashing sessions. For those serious about maintaining their RC vehicles in top condition, investing in quality spares like this Fastrax differential is a smart decision that will extend the lifespan of your ARRMA Grom or Granite truck and ensure consistent performance every time you hit the track or trail.
Key Features
- Complete Metal Differential Assembly — This is a fully assembled differential unit constructed from metal materials, providing exceptional durability and longevity compared to plastic alternatives found on standard vehicles. The metal construction resists wear, stripping, and damage during intense use, making it ideal for serious RC enthusiasts.
- Direct Compatibility with Multiple ARRMA Models — This differential is engineered to fit seamlessly with the ARRMA 1/18 Granite Grom, ARRMA 1/16 Mojave Grom, and other compatible ARRMA platforms, ensuring perfect fitment and reliable performance as a direct replacement or upgrade component.
- Enhanced Durability and Performance — The metal construction significantly improves resistance to the stresses of off-road driving, reducing the likelihood of differential failure during high-impact manoeuvres, jumps, and rough terrain use that would damage standard plastic differentials.
- Professional-Grade Engineering — Fastrax is recognised as a premium manufacturer of RC upgrade parts, and this differential reflects their commitment to precision engineering and quality control, ensuring smooth operation and reliable torque distribution to both wheels.
- Ideal for Upgrade or Repair — Whether you're upgrading your stock ARRMA vehicle for improved durability or replacing a damaged differential, this complete assembly offers excellent value and a straightforward installation path for RC hobbyists of all skill levels.
Technical Performance
The Fastrax metal complete differential represents a significant engineering upgrade from standard plastic components found on factory-built ARRMA vehicles. Metal differentials offer superior longevity and consistent performance in demanding conditions, which is critical for small-scale 4WD trucks that experience rapid acceleration, aggressive braking, and high-impact terrain transitions. The complete assembly nature of this unit means it arrives ready to install, with all internal components pre-assembled and pre-lubricated to exacting Fastrax specifications. The metal construction provides enhanced wear resistance, reduced gear stripping, and improved resistance to impact damage compared to plastic alternatives. This is particularly important for the 1/18 Granite Grom and 1/16 Mojave Grom platforms, which are designed for aggressive bashing and off-road exploration. The differential is engineered to distribute torque smoothly and consistently between the left and right wheels, maintaining traction and stability across various terrain types and driving conditions. For UK RC enthusiasts seeking to build or maintain a high-performance small-scale 4WD truck, upgrading to metal drivetrain components like this differential is a proven method of extending vehicle lifespan and improving overall reliability.
What's in the Box
- Fastrax Arrma Grom/Granite/Mojave Metal Complete Differential assembly
- Pre-assembled and ready for installation
Frequently Asked Questions
- Which ARRMA models is the Fastrax FTAR063 differential compatible with? — This metal differential is designed to fit the ARRMA 1/18 Granite Grom (all colour variants including red, blue/red, and green versions), the ARRMA 1/16 Mojave Grom 223S BLX (available in black, teal, and white), and the ARRMA Mojave Grom MEGA 380 models. If you own any of these small-scale ARRMA 4WD trucks, this differential is engineered as a direct replacement or upgrade component.
- Why should I upgrade to a metal differential from the standard plastic version? — Metal differentials provide significantly better durability, wear resistance, and impact protection compared to plastic components. During aggressive driving, jumping, and rough terrain use, plastic differentials are prone to gear stripping and cracking. A metal differential from Fastrax maintains consistent performance, resists damage, and requires less frequent replacement, making it a worthwhile investment for serious RC car UK enthusiasts.
- Is this a complete assembly or do I need additional parts? — This is a complete differential assembly that arrives fully assembled and ready for installation. You do not need to source individual gears or bearings separately; everything required for a fully functional differential is included in this unit.
- How difficult is it to install this differential? — Installation difficulty depends on your familiarity with ARRMA vehicle maintenance. The differential is a direct replacement component, so removal of the old unit and installation of the new one typically involves removing a small number of fasteners and axle components. If you have basic RC mechanic skills or access to online installation guides for your specific ARRMA model, installation should be manageable. However, if you're unsure, your local RC hobby shop or an experienced RC mechanic can assist with installation.
- What makes Fastrax differentials different from standard ARRMA components? — Fastrax is a recognised manufacturer of premium RC upgrade parts engineered to exceed the specifications of factory components. Their metal differentials combine precision engineering with superior materials, resulting in longer component lifespan, more consistent torque distribution, and improved overall vehicle reliability compared to standard plastic ARRMA differentials.
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 FASTRAX ARRMA GROM/GRANITE/MOJAVE METAL COMPLETE DIFFERENTIAL FTAR063 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.
- Brand: Fastrax
- Product Code: FTAR063
- EAN: 5056135785157
- Product Type: Metal Complete Differential Assembly
- Construction Material: Metal
- Compatibility: ARRMA 1/18 Granite Grom MEGA 380 Brushed 4x4 (all colour variants - red, blue/red, green)
- Compatibility: ARRMA 1/16 Mojave Grom 223S BLX 4x4 DT (all colour variants - black, teal, white)
- Compatibility: ARRMA Mojave Grom MEGA 380 Brushed 4x4 (all colour variants)
- Assembly Status: Complete and fully assembled, ready for installation
- Component Type: Direct replacement/upgrade differential unit
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.
