Overview
The ARRMA Metal Diff Case (29mm) is an essential upgrade component for RC enthusiasts looking to enhance the durability and performance of their ARRMA models. This premium differential case replacement is designed to transform your plastic cased differential into a robust, metal-reinforced unit that can handle the demands of serious off-road RC driving. Whether you're a dedicated RC car UK competitor or a weekend basher pushing your brushless RC monster truck to its limits, this upgrade delivers the strength and reliability you need to keep your model performing at its best.
Precision-engineered by ARRMA, this 29mm differential case set comes complete with everything you need to perform a full differential rebuild. The combination of aluminium and steel construction provides significant durability improvements over standard plastic components, making it an excellent investment for anyone wanting to extend the lifespan of their ready to run RC truck or off-road vehicle. The red anodized finish isn't just for aesthetics—it's a hallmark of ARRMA quality and adds that distinctive look that ARRMA enthusiasts love.
Compatible with a wide range of ARRMA models including the 1/8 Kraton 6S, 1/8 Notorious 6S, 1/7 Limitless 8S, 1/7 Mojave 6S, and 1/7 Big Rock 6S, this transmission upgrade is perfect for hobbyists who want to maintain and upgrade their vehicles with genuine OEM parts. The precision manufacturing ensures a reliable fit every time, so you can complete your differential rebuild with confidence.
Key Features
- Red Anodised Aluminium Case Body — The main differential case is crafted from red anodised aluminium, which provides superior strength and durability compared to plastic alternatives whilst maintaining the iconic ARRMA aesthetic that makes your RC model look sharp and professional.
- Hard Wearing Steel Diff Case Face Plate — The steel face plate adds significantly increased durability and longevity to the differential assembly, preventing wear and ensuring consistent performance through countless hours of use and demanding driving conditions.
- Complete Rebuild Kit — This set includes all the essential components needed to perform a professional differential rebuild, eliminating the need to source parts separately and ensuring compatibility between all components.
- Precision Manufactured for Reliable Fit — Each component is manufactured to exacting tolerances, guaranteeing a perfect fit when installed on compatible ARRMA models and ensuring smooth operation without any play or misalignment.
- Includes All Fasteners and Gaskets — The kit comes with M3 x 8mm flat head screws and diff gaskets, meaning you have everything required to complete the installation without needing to purchase additional hardware.
Technical Performance
The ARRMA Metal Diff Case (29mm) represents a significant performance and durability upgrade over standard plastic differential components. The combination of red anodised aluminium and hard-wearing steel construction provides a substantial increase in strength and longevity, which is particularly important for serious RC enthusiasts who demand reliability from their brushless RC trucks and off-road vehicles. The 29mm case size is specifically engineered to work with differential components designed for this dimension, ensuring perfect compatibility with ARRMA's transmission systems. The precision manufacturing process ensures that every component meets strict tolerances, resulting in smooth operation and consistent performance. Unlike plastic cases that can degrade under stress and repeated impacts, the metal construction of this upgrade maintains its integrity through intense driving sessions, whether you're tackling difficult terrain with a 1/8 scale RC monster truck or pushing a 1/7 scale trophy truck to its limits. The inclusion of quality gaskets ensures proper sealing and prevents oil leakage from the differential assembly, maintaining optimal lubrication and performance. This upgrade is particularly valuable for drivers who engage in competitive racing or regular high-stress driving, as the enhanced durability directly translates to reduced downtime for maintenance and repairs.
What's in the Box
- 1 x Aluminium Diff Case Body (red anodised)
- 1 x Steel Diff Case Face Plate
- 2 x Diff Gaskets
- 8 x M3 x 8mm Flat Head Screw
What You Need to Complete
- Differential components designed to be used with 29mm Diff Case (your existing differential gears, shafts and bearings)
Frequently Asked Questions
- Is the ARRMA Metal Diff Case 29mm compatible with my RC model? — Yes, this upgrade is compatible with numerous ARRMA models including the 1/8 Kraton 6S, 1/8 Notorious 6S, 1/7 Limitless 8S AVC, 1/7 Mojave 6S EXB, and 1/7 Big Rock 6S 4x4. Check the compatibility list to confirm your specific model variant is supported, as different editions may require different components.
- What improvements will I see from upgrading to a metal differential case? — The metal case provides substantially improved durability and strength compared to plastic alternatives, resulting in reduced wear, better longevity, and fewer repairs needed over time. The hard-wearing steel face plate and anodised aluminium case body work together to prevent stress-related damage that commonly occurs in plastic cases during intense driving or off-road use.
- Do I need any special tools to install this upgrade? — The installation process uses standard M3 screws and requires basic RC maintenance tools. The precision manufacturing ensures a reliable fit without requiring any modifications or special equipment, making this an accessible upgrade for hobbyists with basic mechanical experience.
- Will this upgrade increase the speed of my RC car? — This is a strength and durability upgrade rather than a performance enhancement for speed. However, by reducing wear and improving reliability, you'll experience more consistent performance over longer periods, and the improved differential function ensures better power delivery to both wheels without slipping.
- Can I install this on my own or do I need professional help? — Most RC enthusiasts with basic mechanical skills can install this upgrade themselves. The complete kit includes all necessary hardware and gaskets, and the precision manufacturing ensures straightforward installation. If you're unfamiliar with differential rebuilds, many local RC hobby shops in the UK offer professional installation services.
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 Metal Diff Case (29mm) Z-ARA311061 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.
