- Part Type: Differential Gear Set
- Manufacturer: ARRMA
- Model Number: ARA310957
- Scale Compatibility: 1/7 and 1/8 scales
- Differential Type: Front or Rear Spiral Cut
- Main Gear: 43T Spiral Cut Steel
- Internal Gears: Steel construction
- Differential Case: Strong composite material
- Cross Shafts: Metal construction with inserts
- Oil Type: Silicone Oil
- Oil Viscosity: 10k cSt
- Assembly Status: Factory assembled and filled
- Included Components: Bearings pre-installed
- Suitable For: ARRMA 6S Brushless RTR vehicles
- Compatible Models: 1/7 FIRETEAM 6S 4X4, 1/7 MOJAVE 6S 4X4, 1/7 MOJAVE 6S V2 4X4, 1/8 KRATON 6S 4X4, 1/8 NOTORIOUS 6S 4X4, 1/8 OUTCAST 6S 4X4, 1/8 OUTCAST 6S Limited Edition, 1/8 TALION 6S 4X4
- Installation: Direct fit, no assembly required
Overview
The ARRMA Front Rear Diff Set with Spiral 43T 10k Oil is an essential replacement component for maintaining and servicing your ARRMA RC vehicle. Whether you own a 1/7 scale FIRETEAM, MOJAVE, or one of the high-performance 1/8 scale models such as the KRATON, NOTORIOUS, OUTCAST, or TALION, this factory-assembled differential unit ensures your RC car UK experience remains smooth and reliable. This is the perfect solution for enthusiasts who demand quality spare parts and want to keep their brushless RC trucks and buggies running at peak performance.
Pre-assembled and filled with 10k cSt silicone oil, this differential set eliminates the need for complex assembly and guesswork during maintenance. The spiral cut main gear design delivers enhanced durability under extreme driving loads, making it ideal for both casual weekend bashers and competitive racers. If you're seeking to replace a worn differential or upgrade your existing setup, this ARRMA differential provides the dependability and performance characteristics that professional RC drivers trust.
Designed specifically for ARRMA's range of 6S brushless RTR (ready to run) vehicles, this spiral cut diff set represents factory-quality engineering combined with practical, user-friendly features. The combination of tough internal components and the factory-filled silicone oil makes this an excellent choice for UK RC enthusiasts who want to maintain their vehicles without hassle.
Key Features
- Factory Assembled Construction — This differential arrives fully assembled and pre-filled with 10k cSt silicone oil, which means you can install it directly into your RC car without time-consuming preparation or calibration, getting your vehicle back on the track or trail quickly.
- 43T Spiral Cut Steel Main Gear — The spiral cut design on the main gear provides superior load distribution and increased durability when subjected to extreme driving conditions, making it capable of handling aggressive acceleration, high-speed cornering, and rough terrain without premature wear.
- Tough Steel Internal Gears — All internal gears are constructed from hardened steel, which delivers exceptional longevity and resistance to damage across all driving conditions, from smooth tarmac to rocky off-road terrain.
- Strong Composite Diff Case — The durable composite casing provides structural rigidity whilst remaining lightweight, ensuring the differential maintains its shape and function under the stresses of high-performance driving without adding unnecessary weight to your RC vehicle.
- Metal Cross Shafts and Inserts — Premium metal construction of the cross shafts and internal inserts enhances the efficiency of power distribution and extends the service life of the differential, reducing wear and maintaining smooth operation over many hours of use.
- Included Bearings — Pre-installed bearings eliminate assembly confusion and ensure fast, efficient installation directly into your ARRMA vehicle, allowing for immediate enjoyment without technical complications.
- 10k cSt Silicone Oil Filled — The factory-filled silicone oil is precisely calibrated for optimal differential performance, providing the correct viscosity for smooth operation and proper torque distribution between the front and rear wheels.
Technical Performance
This ARRMA differential set represents a complete, ready-to-install solution for maintaining or upgrading your brushless RC truck or buggy. The 43T spiral cut gear configuration is engineered to handle the power output of 6S LiPo battery systems that power ARRMA's latest generation brushless vehicles. The steel internal gears work in conjunction with the metal cross shafts to distribute torque evenly, ensuring predictable handling characteristics during cornering and acceleration. The 10k cSt silicone oil provides the optimal viscosity for smooth differential action whilst maintaining the correct torque bias under load, crucial for maintaining traction and control on both pavement and loose terrain. The composite diff case balances strength with minimal weight addition, maintaining the vehicle's performance envelope. This is the same quality of engineering found in factory ARRMA vehicles, making it a recognised choice for RC enthusiasts across the UK who understand the importance of component quality.
What's in the Box
- 1 x Factory Assembled Front or Rear Differential Unit
- 43T Spiral Cut Steel Main Gear (installed)
- 10k cSt Silicone Oil (pre-filled)
- Steel Internal Gears (installed)
- Metal Cross Shafts and Inserts (installed)
- Composite Diff Case
- Bearings (installed)
Frequently Asked Questions
- Which ARRMA vehicles is this differential compatible with? — This Front Rear Diff Set is compatible with multiple ARRMA platforms, including the 1/7 FIRETEAM 6S 4x4 RTR Brushless Buggy, the 1/7 MOJAVE 6S 4x4 RTR Brushless Desert Truck (both standard and V2 models), and the 1/8 scale lineup which includes the KRATON 6S 4x4 RTR Brushless Speed Truck, NOTORIOUS 6S 4x4 RTR Brushless Stunt Truck, OUTCAST 6S 4x4 RTR Brushless Stunt Truck (including the Limited Edition version), and TALION 6S 4x4 RTR Brushless Speed Truck in Red/Black. Always verify your specific model against the compatibility list before ordering.
- Why should I choose a spiral cut gear over a straight cut gear? — Spiral cut gears offer several advantages including smoother power delivery, quieter operation, and superior durability under heavy load conditions. The angled tooth profile distributes stresses more evenly across the gear teeth, reducing the risk of chipping or breaking under the extreme loads generated by brushless motors in high-performance RC vehicles.
- Is the silicone oil included, or do I need to purchase it separately? — The silicone oil is included and the differential comes factory-filled with 10k cSt silicone oil, which is the correct viscosity for ARRMA 6S vehicles. This eliminates the need for additional purchases and ensures optimal performance from the moment you install the unit.
- Can I use this differential as a front or rear unit? — Yes, this is a front or rear spiral cut diff set, meaning it can be installed in either the front or rear position of your ARRMA vehicle, depending on your maintenance needs or upgrade requirements.
- What does the 43T specification mean? — The 43T refers to the number of teeth on the main spiral cut gear. This tooth count is calibrated specifically for ARRMA 6S brushless vehicles and works in conjunction with the pinion gear to provide the correct final drive ratio for optimal acceleration and top speed balance.
- How often should I replace my differential? — Differential replacement intervals depend on driving conditions and frequency of use. However, if you notice increased noise from the differential, difficulty with turning, or power delivery inconsistencies, it's time to service or replace your differential. Regular maintenance and occasional differential fluid changes help extend service life significantly.
- What is 10k cSt oil, and why is this viscosity important? — cSt stands for centistokes, a unit of measurement for fluid viscosity. 10k cSt (10,000 centistokes) is a moderately thick silicone oil that provides appropriate damping and torque bias for ARRMA's 6S brushless platform. This viscosity ensures smooth differential action without excessive slip or binding, critical for maintaining predictable handling characteristics.
- Is this differential suitable for beginners, or is it only for experienced RC drivers? — This is an OEM replacement component suitable for any skill level. If you own an ARRMA 6S vehicle and need to replace or service your differential, this factory-assembled unit is perfect for beginners as it requires no complex assembly. Simply install it and enjoy worry-free operation.
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 Front Rear Diff Set, Spiral 43T 10k Oil 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.
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