Overview
The FTX Kanyon/Mighty Thunder 70t Spur Gear (FTX8439) is an essential replacement drivetrain component for two of FTX's most popular RC crawler models in the UK market. This genuine OEM spur gear is engineered to deliver reliable power transmission in the drivetrain system of your RC vehicle, making it an indispensable spare part for serious RC enthusiasts who demand durability and performance from their equipment. Whether you're a seasoned RC car UK hobbyist or someone who enjoys weekend bashing and trail driving, maintaining the integrity of your drivetrain components is absolutely critical to keeping your vehicle in peak operating condition.
Spur gears are among the most heavily stressed components in any RC car's drivetrain, transmitting rotational force from the motor directly to the transmission and wheels. Over time, even the highest-quality gears can wear down through normal use, especially in the demanding conditions that rock crawlers and trail vehicles must endure. Having a spare 70-tooth spur gear on hand means you're never left stranded by a broken drivetrain component, and you can maintain consistent performance across multiple driving sessions. The FTX8439 is the genuine OEM replacement part, ensuring perfect fitment and compatibility with your existing FTX chassis components.
This spare part is compatible with two premium FTX ready-to-run RC crawler models: the FTX5563 Kanyon 4x4 RTR 1:10 XL Trail Crawler and the FTX5563R Kanyon 4x4 Mountain Rescue 2-Speed RTR 1:10 XL Crawler. If you own either of these impressive 1/10 scale vehicles, the FTX8439 is the correct replacement spur gear for your model. RC enthusiasts across the UK have recognised the value of keeping genuine replacement parts in stock, allowing uninterrupted enjoyment of their RC vehicles without lengthy downtime waiting for repairs.
Key Features
- 70-Tooth Spur Gear Design — The 70-tooth configuration delivers the precise gear ratio required for optimal performance in the FTX Kanyon and Mighty Thunder drivetrain systems, ensuring smooth power delivery and reliable torque transmission from motor to wheels at all throttle positions.
- Genuine OEM Replacement — This is the authentic FTX-manufactured replacement part, which guarantees exact specifications, perfect fit, and seamless integration with your existing chassis components without any modification or adjustment needed.
- Drivetrain Spar Component — Classified as a drivetrain spare part, this spur gear is one of the critical wear items in any RC vehicle, and having genuine replacements on hand ensures you're always ready for the next driving session without unexpected downtime.
- Compatible with Premium FTX Models — This spur gear fits both the FTX Kanyon 4x4 RTR 1:10 XL Trail Crawler (FTX5563) and the FTX Kanyon 4x4 Mountain Rescue 2-Speed RTR 1:10 XL Crawler (FTX5563R), two of FTX's most capable 1/10 scale vehicles designed for serious trail and crawling applications.
- Affordable Spare Part Solution — At an economical price point, the FTX8439 represents excellent value for maintaining your RC vehicle's drivetrain performance, allowing you to keep multiple spares without breaking the budget.
Technical Performance
The FTX Kanyon/Mighty Thunder 70t Spur Gear is engineered to the exact specifications required for reliable operation in the FTX drivetrain architecture. As a 70-tooth spur gear, this component handles the critical job of transferring motor output directly to the transmission system with minimal power loss. The spur gear's tooth profile is precision-manufactured to mesh cleanly with the pinion gear driven by the motor, ensuring smooth engagement and smooth power delivery across the entire throttle range. In RC vehicles like the Kanyon 4x4 RTR 1:10 XL Trail Crawler and Mighty Thunder models, the spur gear is subject to significant rotational stress, especially when navigating rocky terrain, climbing obstacles, or executing high-torque manoeuvres. The genuine FTX component is manufactured to withstand these demanding conditions, maintaining dimensional accuracy and tooth integrity even after extended use. The 70-tooth configuration represents the stock specification for these models, having been carefully selected by FTX engineers to balance acceleration, top speed, and torque characteristics for optimal performance in trail and crawling applications. Because spur gears are exposed to wear, damage from rock strikes, or grinding in aggressive driving conditions, keeping genuine replacement gears in stock is a smart maintenance strategy for any serious RC enthusiast in the UK who wants to minimise vehicle downtime.
What's in the Box
- 1x FTX Kanyon/Mighty Thunder 70t Spur Gear
Frequently Asked Questions
- What vehicles does the FTX8439 70t Spur Gear fit? — The FTX8439 is compatible with the FTX Kanyon 4x4 RTR 1:10 XL Trail Crawler (FTX5563) and the FTX Kanyon 4x4 Mountain Rescue 2-Speed RTR 1:10 XL Crawler (FTX5563R). If you own either of these 1/10 scale RC crawlers, this is the correct genuine OEM replacement spur gear for your drivetrain.
- Why would I need a replacement spur gear? — Spur gears are among the most heavily stressed components in any RC vehicle's drivetrain, transmitting all the motor's rotational force to the wheels. With normal use, especially on rocky terrain or in demanding trail driving conditions, teeth can gradually wear, or the gear can become damaged from impacts or grinding. Having a spare means you're never stranded with a broken drivetrain, and you can maintain consistent performance across multiple driving sessions.
- Is the FTX8439 a genuine OEM part? — Yes, the FTX8439 is the genuine OEM replacement spur gear manufactured by FTX themselves, ensuring it meets the exact specifications required for your Kanyon or Mighty Thunder vehicle. Using genuine replacement parts guarantees perfect fitment and eliminates the risk of compatibility issues.
- How many spare spur gears should I keep? — Many experienced RC enthusiasts recommend keeping at least 2-3 spare spur gears on hand, as these are consumable components that will eventually require replacement. Having backups ensures uninterrupted enjoyment of your RC vehicle without waiting for replacement parts to arrive, which is especially valuable if you drive regularly or competitively.
- What is the difference between a spur gear and a pinion gear? — The spur gear (in this case, 70 teeth) is the larger gear that mounts on the transmission output and is driven by the smaller pinion gear connected to the motor. The ratio between the two determines your vehicle's acceleration and top speed characteristics. The FTX8439 is the spur gear component, which works in conjunction with your motor's pinion gear.
- Can I use aftermarket spur gears as replacements? — While aftermarket options may exist, the genuine FTX OEM replacement is engineered specifically for your Kanyon or Mighty Thunder vehicle and guarantees perfect fit and optimal performance. Using genuine parts eliminates any risk of dimension mismatches, tooth profile incompatibility, or durability concerns that might arise from non-OEM alternatives.
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 FTX Kanyon/ Mighty Thunder 70t Spur Gear FTX8439 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.
- Model Number: FTX8439
- Brand: FTX
- Part Type: Drivetrain Spares
- Component: Spur Gear
- Tooth Count: 70t
- Spare Part Classification: Drivetrain Component
- Compatible Vehicles: FTX5563 Kanyon 4x4 RTR 1:10 XL Trail Crawler, FTX5563R Kanyon 4x4 Mountain Rescue 2-Speed RTR 1:10 XL Crawler
- Scale: 1:10
- Vehicle Type: Rock Crawlers / Trail Crawlers
- EAN: 5056135705056
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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