- Model Number: Z-ARA311103
- Manufacturer: ARRMA
- EAN: 5052127041027
- Spare Part Type: Drivetrain Spares
- Spur Gear Tooth Count: 50T
- Gear Module: 0.8Mod
- Gear Material: Hard-wearing molded composite
- Slipper Pad Type: Single castellated slipper pad design
- Compatible Vehicle Models: ARRMA Infraction 4x4 1/8 3S BLX Resto-Mod Truck RTR (Teal - C-ARA4315V3T2), ARRMA Infraction 4x4 1/8 3S BLX Resto-Mod Truck RTR (Gold - C-ARA4315V3T1), ARRMA Vendetta 3S
- Required Component: ARA310994 — ARRMA Slipper Pad (4-piece set)
Overview
The ARRMA Spur Gear 50T 0.8Mod Z-ARA311103 is a precision-engineered replacement drivetrain component designed for high-performance RC vehicles. This essential spare part is specifically compatible with the ARRMA Infraction 4x4 1/8 scale brushless truck platform, making it an ideal choice for RC enthusiasts across the UK who demand reliability and durability from their RC car upgrades. Whether you're running your 3S LiPo-powered machine in competitive racing or weekend bashing, this spur gear replacement ensures consistent power delivery and smooth operation throughout your RC experience.
Built to the exacting standards ARRMA is renowned for, this spur gear represents the kind of quality engineering that separates serious RC bashers from casual operators. RC car UK enthusiasts understand that transmission components like spur gears are critical to overall vehicle performance, and investing in genuine OEM parts means you're maintaining your ready to run RC truck at peak efficiency. The 50-tooth, 0.8 module specification positions this gear as a performance-oriented choice for drivers seeking responsiveness and reliable torque delivery across various racing conditions.
For dedicated RC hobbyists running the Infraction 3S platform, keeping genuine replacement parts in your spares box is essential maintenance practice. This spur gear will restore your vehicle's drivetrain integrity after wear or damage, ensuring you maintain the precise gear mesh and engagement characteristics that define the Infraction's legendary performance credentials. RC Model Shop stocks this genuine ARRMA component as part of our comprehensive range of RC spares and tune-up parts for the UK market.
Key Features
- Precision Manufactured Gear Teeth — The teeth are precision engineered to exacting tolerances, delivering smooth and consistent performance during acceleration and cruising. This precision manufacturing ensures minimal backlash and optimal power transmission efficiency, which translates directly to better handling characteristics and more predictable throttle response from your brushless RC truck.
- Tough Molded Composite Material — Constructed from hard-wearing, durable composite materials, this spur gear resists the stresses and impacts inherent in aggressive RC driving. The composite construction provides excellent strength-to-weight characteristics whilst maintaining the durability needed for extended bashing sessions and competitive racing without premature wear or tooth stripping.
- Durable 0.8 Module Tooth Profile — The 0.8 module specification represents an optimal balance between gear strength and rotational efficiency. This tooth profile is specifically engineered for 1/8 scale vehicles like the ARRMA Infraction, providing the ideal engagement surface for maximum torque transfer whilst maintaining smooth operation at high RPMs typical of brushless electric RC cars.
- Single Castellated Slipper Pad Design — This spur gear is designed to work with a single castellated slipper pad, a design approach that offers several advantages for RC performance. The castellated design (featuring notched edges) provides superior engagement and prevents pad slip-out during hard acceleration or deceleration, delivering dependable and consistent operation that you can rely on in competitive or recreational driving.
- Improved Slipper Pad Engagement — The castellated slipper pad approach offers better engagement characteristics than conventional designs, which means more reliable torque delivery and less risk of drivetrain failure during hard driving. This engineering feature is particularly important for 3S LiPo-powered vehicles like the Infraction, where power levels demand robust drivetrain components.
Technical Performance
The ARRMA Spur Gear 50T 0.8Mod Z-ARA311103 represents genuine OEM engineering built to the same specifications and quality standards as the components installed on new ARRMA Infraction 4x4 1/8 brushless vehicles. The 50-tooth configuration paired with the 0.8 module profile creates an optimal gear ratio for the Infraction 3S platform, balancing acceleration response with top-end velocity for a well-rounded performance envelope. The composite material selection provides excellent durability characteristics, resisting wear and maintaining tooth profile integrity through hundreds of running hours. The precision-manufactured teeth ensure consistent meshing with the pinion gear, eliminating the chatter and vibration that can develop with worn or lower-quality replacement gears. This component works in partnership with genuine ARRMA slipper pads (specifically the ARA310994 slipper pad set, sold separately) to create a reliable and responsive drivetrain system worthy of your 3S LiPo investment. The castellated slipper pad engagement system delivers the kind of dependable power transfer expected from purpose-built RC car UK competition equipment, whilst the durable composite construction ensures this gear will maintain its performance characteristics across extensive use in both dry racing conditions and dusty bashing environments typical of British RC venues.
What's in the Box
- 1 x ARRMA Spur Gear 50T 0.8Mod
What You Need to Complete
- ARA310994 — ARRMA Slipper Pad (4-piece set) — Required to complete the spur gear assembly for proper drivetrain operation
Frequently Asked Questions
- What ARRMA models is the Z-ARA311103 spur gear compatible with? — This spur gear is specifically designed for the ARRMA Infraction 4x4 1/8 scale brushless platform, including both the Resto-Mod Truck RTR variants (Teal and Gold colour options). It is also compatible with the ARRMA Vendetta 3S platform. Always verify compatibility with your specific model before ordering replacement drivetrain components.
- Why do I need castellated slipper pads with this gear? — The spur gear is engineered to work with castellated slipper pads, which feature notched edges that provide superior engagement and prevent pad dislodgement during aggressive driving. This design ensures consistent torque delivery and reduces the risk of drivetrain failure during hard acceleration or competition driving. The ARA310994 slipper pad set (4 pieces) is the correct complementary component for this gear.
- How often should I replace my spur gear? — Spur gear lifespan depends entirely on your driving style, maintenance practices, and running conditions. Aggressive racing, inadequate lubrication, or running with worn pinion gears will accelerate spur gear wear. Most RC enthusiasts maintain spares in their pit box and replace gears at the first signs of tooth wear, noise, or power delivery inconsistency. Regular inspection is a best practice for serious RC car UK competitors.
- What is the difference between 0.8 module and other module sizes? — Module rating describes tooth pitch and strength characteristics. The 0.8 module is specifically optimised for 1/8 scale vehicles like the ARRMA Infraction, providing the ideal balance between gear strength, rotational efficiency, and compatibility with the Infraction's pinion gear. Using gears with incorrect module ratings will result in poor mesh, drivetrain noise, and potential failure. Always use genuine OEM specifications for replacement components.
- Can this spur gear be used on other RC vehicles? — No, this spur gear is purpose-engineered for the ARRMA Infraction 4x4 1/8 and ARRMA Vendetta 3S platforms. Using it on incompatible vehicles may result in poor gear mesh, excessive noise, reduced efficiency, and potential drivetrain damage. Always verify exact model compatibility before purchasing any RC drivetrain components, particularly when ordering spares online.
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 Spur Gear 50T 0.8Mod Z-ARA311103 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:
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