- Model Number: Z-ARA310919
- Brand: ARRMA
- Part Type: Centre Differential Case Set
- Scale: 1/5
- Material: Aluminium case with steel gears
- Main Gear: 37-tooth steel gear
- Gear Module: 1.35M
- Gear Type: Straight-cut steel internal gears
- Diff Output Shafts: High-strength steel with splines
- Diff Case: Precision moulded composite
- Pre-assembled: Yes, ready to install
- Pre-filled with 10,000cSt silicone oil: Yes
- Installation Position: Front or rear
- Fitment: Compatible with ARRMA 1/5 scale models including Outcast 4X4 8S BLX EXB and other compatible ARRMA vehicles
Overview
The ARRMA Aluminium Center Diff Case Set (1 Diff) Z-ARA310919 is a premium drivetrain component designed for RC enthusiasts who demand durability and precision engineering in their vehicles. This pre-assembled metal differential set represents a significant upgrade for users looking to enhance the performance and longevity of their ARRMA RC models. Whether you're a seasoned basher, a competitive racer, or someone exploring the world of ready to run RC cars, this centre differential case set delivers the quality and reliability that ARRMA is recognised for across the UK RC market.
This replacement differential is engineered to withstand the demands of aggressive driving and off-road conditions. The unit comes pre-assembled and ready to install directly into the front or rear of compatible ARRMA vehicles, making it an ideal choice for both maintenance and performance upgrades. The aluminium centre diff case set is manufactured to the highest standards, ensuring accurate tooth mesh and smooth power delivery across all driving conditions. For RC car enthusiasts in the UK seeking a reliable, high-performance differential upgrade, this ARRMA component represents excellent value and genuine quality you can trust.
ARRMA has built its reputation on delivering brushless RC trucks and buggies that perform consistently, and this centre differential is part of that commitment to excellence. The metal construction provides superior durability compared to plastic alternatives, making it perfect for serious hobbyists who want their RC vehicle to perform reliably weekend after weekend. Installation is straightforward, and the pre-assembled design means you can have your vehicle back in action quickly.
Key Features
- Steel 1.35 Module Main Gear — The steel construction of the primary gear ensures ultimate durability, delivering superior strength and longevity compared to alternative materials, which is especially important when driving aggressively or in demanding terrain.
- Precision Manufactured Gears — Each component is precision engineered to ensure accurate tooth mesh, which reduces backlash and delivers smooth, efficient power delivery from the motor to the wheels without vibration or slippage.
- Tough Precision Moulded Composite Diff Case — The composite diff case is designed to ensure accurate alignment between all internal gears, maintaining perfect geometry even under stress and protecting the internal components from impact damage.
- High Strength Steel Straight-Cut Diff Internal Gears — These steel gears are engineered for maximum strength and precision, providing reliable torque distribution and smooth operation across all driving conditions and surfaces.
- Splined Diff Output Shafts — The high-strength steel output shafts feature precision splines that provide a secure, repeatable connection to the wheel hubs, eliminating play and ensuring consistent handling.
- Pre-Assembled Ready to Install — This differential set arrives fully assembled and filled with silicone oil, allowing you to drop it directly into your ARRMA vehicle without additional preparation, saving time and simplifying the installation process.
- 10,000cSt Silicone Oil Filled — The differential comes pre-filled with high-viscosity silicone oil that provides optimal lubrication and differential action, reducing wear and maintaining smooth, predictable performance in all conditions.
- Front or Rear Installation Compatibility — This centre diff set is designed to work in either the front or rear position of compatible ARRMA models, giving you flexibility in your setup and upgrade options.
Technical Performance
The ARRMA Aluminium Center Diff Case Set represents premium drivetrain engineering for 1/5 scale RC vehicles. Constructed from high-quality materials including steel gears and aluminium housing, this differential is engineered to deliver reliable performance in both competitive and recreational driving scenarios. The 37-tooth main gear with 1.35 module specification is a proven design across the ARRMA range, offering the ideal balance between acceleration response and top-end efficiency. The precision-manufactured straight-cut internal gears ensure smooth engagement and minimal noise during operation, whilst the high-strength steel output shafts with splines provide a positive drive connection that eliminates wear over time. The unit arrives pre-filled with 10,000cSt silicone oil, which provides the correct viscosity for optimal lubrication and differential locking behaviour. This is a genuine ARRMA component built to the same exacting standards as the original equipment found on factory-built ready to run RC trucks and buggies. The composite diff case is designed to maintain perfect gear alignment under load, which is critical for minimising wear and maximising efficiency. Whether you're replacing a worn differential on an existing ARRMA model or upgrading from plastic components, this metal centre diff case set delivers measurable improvements in durability and performance.
What's in the Box
- 1x Pre-Assembled Metal Diff Case Set (37T, 1.35M)
- Pre-filled with 10,000cSt silicone oil
Frequently Asked Questions
- What ARRMA RC models is this centre diff case set compatible with? — This differential is compatible with a wide range of ARRMA 1/5 scale models including the Outcast 4X4 8S BLX EXB Brushless Stunt Truck and other compatible ARRMA vehicles. Check the fitment guide or contact us to confirm compatibility with your specific model before ordering.
- Is the differential pre-assembled and ready to install? — Yes, this centre diff case set arrives fully pre-assembled and pre-filled with 10,000cSt silicone oil, allowing you to install it directly into your ARRMA vehicle without additional preparation or assembly. Simply remove the old differential and bolt in the new one.
- What are the benefits of a metal differential over plastic? — Metal differentials offer significantly greater durability and strength compared to plastic alternatives, making them ideal for users who drive aggressively or frequently. The steel gears and components resist stripping and wear much better, resulting in a longer service life and more reliable performance over extended use.
- Can I use this differential in the front and rear of my ARRMA vehicle? — Yes, this centre diff case set is designed to work in either the front or rear position, giving you flexibility in your drivetrain configuration and upgrade options depending on your driving style and preferences.
- Why does the differential come filled with silicone oil? — The 10,000cSt silicone oil provides optimal lubrication for all internal gears and is essential for proper differential function. Pre-filling the unit eliminates the need for you to add oil separately and ensures the correct viscosity from the moment you install it.
- What is the 37T 1.35M specification? — The 37T refers to the number of teeth on the main gear, whilst the 1.35M indicates the module size of the gears. This specification is a proven design that offers excellent acceleration and efficiency for typical RC driving conditions and is standard across many ARRMA models.
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 Aluminum Center Diff Case Set (1 Diff) Z-ARA310919 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.
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