Fastrax ARRMA Aluminium Front Rear Differential Case for Kraton Senton Outcast FTAR013BK

Overview

The Fastrax ARRMA Aluminium Front/Rear Diff Case is an essential upgrade component for owners of ARRMA Kraton, Senton and Outcast RC vehicles. Whether you're a seasoned RC enthusiast running a high-performance RC car in the UK or someone just starting out with ready to run RC models, maintaining and upgrading your differential cases is crucial for long-term durability and optimal performance. This premium aluminium differential case replacement is designed to provide superior strength and heat dissipation compared to standard plastic alternatives, making it an ideal choice for bashers, racers and anyone looking to extend the lifespan of their ARRMA RC vehicle.

Differential cases are critical components in any RC car transmission system, as they allow the wheels to rotate at different speeds during cornering whilst still maintaining power delivery to both wheels. The Fastrax aluminium construction ensures that your differential runs cooler and stronger, even during extended bashing sessions or competitive racing. This is particularly important if you've upgraded your brushless motor or increased your driving intensity, as stock components can struggle under sustained stress. By investing in this Fastrax upgrade, you're choosing quality engineering that has been proven across countless RC platforms and racing championships throughout the UK and beyond.

Available as both front and rear application, this single diff case can be used depending on your specific setup requirements, offering flexibility and compatibility with multiple ARRMA models. The precision engineering ensures perfect fitment and reliable operation, eliminating the risk of compatibility issues that can arise from inferior aftermarket parts. RC Model Shop stocks only genuine Fastrax products, so you can be confident that you're purchasing an authentic component backed by the manufacturer's reputation for quality.

Key Features

• Premium Aluminium Construction — Manufactured from high-grade aluminium alloy, this differential case is significantly stronger and more durable than standard plastic cases, providing enhanced longevity even under extreme bashing and racing conditions on the track or off-road.
• Superior Heat Dissipation — The aluminium material naturally conducts heat away from the differential gears more effectively than plastic, keeping your transmission cooler during intense driving sessions and helping to maintain consistent performance and reliability.
• Compatible with Multiple ARRMA Models — This differential case is engineered to fit ARRMA Kraton, Senton and Outcast models, making it a versatile upgrade that can be applied to multiple vehicles in your RC collection or easily swapped between models as needed.
• Front and Rear Application — The universal design allows this component to be used in either front or rear differential position, providing flexibility in how you configure your drivetrain and allowing for strategic upgrades depending on your driving style and conditions.
• Enhanced Durability for Aggressive Driving — Whether you're executing high-speed jumps, bashers through rough terrain, or pushing your RC car to its limits during racing, the reinforced aluminium construction provides the strength needed to handle sustained stress without failure or deformation.
• Direct Replacement Component — Designed as a drop-in replacement for stock ARRMA differential cases, installation is straightforward and requires no special modification to your vehicle, making it accessible for all skill levels of RC enthusiasts.
• Precision Engineering — Fastrax maintains strict manufacturing tolerances to ensure perfect fitment and smooth operation, eliminating compatibility issues and ensuring your transmission operates at peak efficiency.

Technical Performance

The Fastrax ARRMA Aluminium Differential Case represents a significant step up from stock plastic components in terms of strength, thermal management and overall reliability. Differential cases are the housing units that contain the gear assembly responsible for distributing power between the two wheels of an axle, allowing them to spin at different speeds during turns whilst maintaining traction. In high-performance RC cars, especially brushless vehicles running on 3S or 4S LiPo batteries, the stresses placed on the differential can be extreme, particularly during rapid acceleration, hard cornering and aggressive bashing. Standard plastic cases can warp, crack or strip under these conditions, leading to costly repairs or replacement of the entire differential assembly. This aluminium case solution provides a rigid, thermally efficient housing that maintains its structural integrity and dimensional accuracy regardless of driving intensity or ambient temperature. The material choice is particularly important for UK RC enthusiasts who may drive in varied weather conditions, as aluminium's resistance to temperature fluctuation helps ensure consistent performance whether you're driving on a summer's day or during cooler winter months. For racers running competitive setups with upgraded motors and maximum-performance tuning, this component is practically essential to prevent transmission failure mid-race. For bashers and recreational drivers, it represents excellent insurance against unexpected breakdowns and the associated downtime and expense. The engineering quality typical of Fastrax ensures that this differential case will work seamlessly with your existing ARRMA drivetrain components, with no fitment issues or operational problems.

What's in the Box

• 1x Fastrax ARRMA Aluminium Front/Rear Differential Case

Frequently Asked Questions

• Is this differential case compatible with my ARRMA RC vehicle? — Yes, this Fastrax component is specifically engineered for ARRMA Kraton, Senton and Outcast models and will fit both front and rear positions. Before purchasing, confirm your vehicle is one of these three models. If you're uncertain, contact RC Model Shop's expert team and they'll help you verify compatibility.
• Why should I upgrade to an aluminium differential case from plastic? — Plastic differential cases can warp, crack or strip under heavy use, especially with brushless motors and high-performance driving. Aluminium is significantly stronger, dissipates heat more effectively and maintains its shape under extreme stress, making it ideal for bashers, racers and anyone running upgraded components. The investment in this upgrade typically pays for itself by preventing costly damage to your transmission.
• Can I use this on both front and rear differentials? — Yes, this is a universal differential case that can be installed in either the front or rear position on your ARRMA vehicle, giving you flexibility in how you upgrade your drivetrain. You may wish to upgrade both positions for maximum durability and performance.
• What is the difference between this Fastrax case and the stock ARRMA plastic case? — The primary differences are material (aluminium versus plastic), durability (significantly stronger), heat dissipation (superior thermal management), and longevity (maintains dimensional accuracy longer). Fastrax is recognised throughout the UK RC community for producing quality upgrade components that reliably improve performance and durability without requiring vehicle modification.
• Is installation difficult? — No, this is a direct replacement component that simply swaps out for your existing differential case. If you're comfortable performing basic RC maintenance like removing and reinstalling parts, you'll find this installation straightforward. Detailed assembly manuals are typically available from Fastrax or through RC Model Shop.
• Is this suitable for beginners? — Whilst this component is more advanced than a ready to run RC car, it's an excellent upgrade for any RC enthusiast, regardless of experience level. If you're comfortable maintaining your ARRMA vehicle and performing basic repairs, upgrading to this differential case is a logical next step in improving durability 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 FASTRAX ARRMA ALU FRONT/REAR DIFF CASE - KRA/SEN/OUT FTAR013BK 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.