- Part number: ARA310956
- Brand: ARRMA
- Type: Differential gear set
- Bevel gear teeth: 37T
- Module pitch: 1.35M
- Oil capacity: 10,000cSt
- Gear type: Straight-cut internal gears
- Case material: Composite
- Case design: Integrated 37T bevel gear with reinforced case cap
- Assembly: Pre-assembled
- Fill status: Pre-filled with oil
- Includes: 1 x Pre-assembled Gear Diff
- Recommended replacement part: HD Input Gear 13T (AR310873)
- Compatible scales: 1/10 and 1/8
- Compatible with: ARRMA BIG ROCK 223S, BIG ROCK 3S, GRANITE 223S, GRANITE 3S, GRANITE Boost, GRANITE Mega 665, SENTON 223S, SENTON 3S, SENTON Boost, KRATON 4S, OUTCAST 4S, VORTEKS 223S, VORTEKS Boost, INFRACTION 223S, INFRACTION 3S, TYPHON 223S, TYPHON 3S, VENDETTA 3S
Overview
The ARRMA Diff Set (37T 1.35M) is an essential replacement component for owners of ARRMA RC vehicles across the UK who demand reliability and performance. This pre-assembled differential set is engineered specifically for servicing and maintaining your RC car's transmission system, ensuring smooth power delivery and optimal handling characteristics. Whether you're a competitive racer pushing your brushless RC monster truck or short course truck to the limit, or a weekend basher enjoying high-speed runs across varied terrain, having a quality replacement diff set in your spares box is crucial for minimising downtime and keeping your RC experience enjoyable.
Designed with ARRMA's commitment to durability and performance, this diff set features precision manufacturing and advanced materials that deliver consistent performance even under extreme driving conditions. The 37-tooth bevel gear combined with the 1.35 module pitch creates the perfect balance for vehicles ranging from 1/10 scale stadium trucks to 1/8 scale buggies. Ready to run RC enthusiasts across the UK will appreciate how this pre-assembled and pre-filled diff set reduces servicing time, allowing you to get back to the track or bash spot faster than ever before.
This genuine ARRMA component is compatible with a wide range of current and recent ARRMA models including the BIG ROCK, GRANITE, SENTON, KRATON, OUTCAST, VORTEKS, TYPHON, INFRACTION and VENDETTA ranges. By choosing an authorised genuine part, you're investing in reliability and longevity for your RC vehicle.
Key Features
- Pre-assembled and pre-filled with oil — This diff set arrives completely assembled and filled with 10,000cSt oil, eliminating the need for complex assembly work and allowing for fast, efficient servicing of your differential system when maintenance is required.
- Super-tough straight-cut internal gears — The precisely engineered internal gears use straight-cut design that provides exceptional durability across all driving conditions, from smooth tarmac to rough off-road terrain, delivering consistent performance without premature wear.
- Super-strong composite diff case — Manufactured from advanced composite materials, the diff case offers superior strength and reliability compared to standard alternatives, capable of handling the extreme loads generated by high-powered brushless motors in demanding driving situations.
- Integrated 37-tooth bevel gear — The 37-tooth bevel gear is directly integrated into the composite case, increasing overall durability and reducing component count, which means fewer potential failure points and more reliable power transmission to your wheels.
- Precision manufactured screw threads — Every threaded connection on this diff set has been precision manufactured to exacting tolerances, ensuring fast and easy servicing when you need to perform maintenance or repairs on your RC car.
- High-precision gear teeth — The bevel gear teeth are manufactured to incredibly tight tolerances, guaranteeing consistent performance at high speeds and smooth engagement with the input gear for reliable acceleration and power delivery.
- Specially designed diff case cap — The reinforced case cap has been specifically engineered to increase strength and durability, protecting internal components whilst maintaining the structural integrity of the entire differential assembly under sustained high-performance driving.
Technical Performance
This ARRMA Diff Set represents the pinnacle of transmission engineering for 1/10 and 1/8 scale RC vehicles currently available in the UK market. The 37-tooth bevel gear with 1.35 module pitch has been selected to provide optimal performance across the entire ARRMA vehicle range, from lightweight 2WD brushed short course trucks through to hardcore 4WD brushless monster trucks and high-speed buggies. The 10,000cSt oil fill ensures smooth engagement and reduces wear on the precision-cut gear teeth, providing extended service life even when subjected to the demanding conditions of high-powered brushless driving. Every component within this differential set has been manufactured using CNC machining and quality control processes that ensure consistent dimensions and engagement characteristics. The composite material used in the diff case has been selected for its superior strength-to-weight ratio, providing the durability needed to withstand extreme loads from powerful brushless motors whilst keeping overall vehicle weight optimised. Whether you're running 3S LiPo power in a short course truck or pushing a 4WD buggy with maximum throttle input, this diff set delivers reliable, predictable power transmission and handling characteristics that allow drivers to focus on technique rather than worrying about mechanical reliability.
What's in the Box
- 1 x Pre-assembled Gear Diff (complete differential set with integrated 37T bevel gear, pre-filled with oil)
What You Need to Complete
- It is recommended to replace the HD Input Gear 13T when installing a new diff set to ensure optimal performance and longevity of your transmission system
Frequently Asked Questions
- Is this ARRMA diff set compatible with my RC vehicle? — Yes, this 37T 1.35M diff set is compatible with a comprehensive range of ARRMA models including the BIG ROCK 223S and 3S, GRANITE 223S, 3S, Boost and Mega, SENTON 223S, 3S and Boost, KRATON 4S, OUTCAST 4S, VORTEKS 223S and Boost, INFRACTION 223S and 3S, TYPHON 223S and 3S, and VENDETTA 3S across both 1/10 and 1/8 scale platforms. Check the detailed fitment list provided to confirm your specific model is supported.
- What is a differential set and why do I need a replacement? — The differential is a crucial transmission component that manages power distribution to both wheels, allowing them to rotate at different speeds during cornering whilst maintaining traction. Over time, the internal gears within the diff can wear, and the oil can degrade, reducing performance and potentially causing mechanical damage. A replacement diff set keeps your RC vehicle running smoothly and ensures reliable handling characteristics.
- Why is this diff set pre-assembled and pre-filled? — The pre-assembled design saves you significant time and effort during maintenance, as there's no need to disassemble the diff case, clean internal components, and carefully refill with oil. It arrives ready to drop into your vehicle, allowing you to complete servicing in minutes rather than hours, keeping your RC car on the track or bash spot where it belongs.
- What happens if I don't replace my diff set regularly? — Neglecting diff maintenance can lead to worn gear teeth, which causes inconsistent handling, reduced acceleration smoothness, and potential mechanical failure that could damage other transmission components. Regular replacement ensures your RC car maintains optimal performance and extends the lifespan of your entire drivetrain system.
- Is a new input gear really necessary when installing this diff? — ARRMA recommends replacing the HD Input Gear 13T (part number AR310873) when installing a new diff set. This ensures that both the input gear and differential have fresh, unworn components with matching tolerances, providing the smoothest engagement and longest service life for your transmission system.
- Can beginners install this diff set themselves? — Yes, the precision manufactured screw threads and pre-assembled design make installation straightforward for owners with basic mechanical skills. However, if you're unfamiliar with RC vehicle maintenance, we recommend consulting your vehicle's manual or seeking guidance from experienced RC enthusiasts before attempting installation.
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 Diff Set (37T 1.35M) 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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