Overview
The HoBao HYPER SSe/CAGE ELECTRIC 1/8 MOTOR PINION 21T (5MM SHAFT) HOP-0038 is a precision-engineered motor pinion gear designed specifically for the HoBao Hyper SS and Cage electric 1/8 scale RC buggy platform. This is an essential upgrade component for serious RC enthusiasts in the UK who demand performance and reliability from their electric RC buggies and racing vehicles. Whether you're a competitive racer looking to fine-tune your gear ratios or a dedicated hobbyist seeking to optimise your 1/8 electric RC buggy's acceleration and speed characteristics, this pinion gear represents the quality engineering you expect from HoBao's extensive range of RC car parts and upgrades.
HoBao has established itself as a trusted manufacturer of high-performance RC vehicles and replacement parts, with a particular reputation for building durable and competitive 1/8 scale electric buggies. The Hyper SS and Cage electric platform has become increasingly popular among UK RC racing communities and weekend bashers alike, thanks to its balanced performance characteristics and extensive parts availability. This motor pinion gear is a genuine HoBao component manufactured to exacting tolerances, ensuring perfect mesh with your motor and spur gear setup for optimal power delivery and efficiency.
The 21-tooth configuration makes this pinion gear suitable for racers seeking a balanced approach between top speed and acceleration, or those looking to replace a worn pinion on their existing setup. Electric RC buggy performance is heavily influenced by gear selection, making this aftermarket pinion an important upgrade option for anyone serious about maximising their 1/8 scale RC buggy's potential on the track or in off-road conditions.
Key Features
- 21-Tooth Pinion Configuration — The 21-tooth design provides an excellent middle ground for gearing ratios, offering a balance between acceleration response and top-end speed that suits a variety of racing conditions and track layouts common to UK RC racing venues.
- 5mm Shaft Compatibility — The 5mm shaft diameter is the standard specification for 1/8 scale HoBao electric motors, ensuring perfect fit and secure coupling with your motor's drive shaft without wobbling or slipping during high-performance driving.
- Precision Engineering — Each pinion is manufactured to exact tolerances by HoBao, guaranteeing smooth meshing with your spur gear and minimising power loss, vibration and noise during operation of your electric RC buggy.
- HoBao Genuine Part — This is an authentic HoBao component designed specifically for the Hyper SS and Cage electric 1/8 platform, ensuring complete compatibility and reliability as an upgrade or replacement part.
- Durable Construction — The pinion gear is built from quality hardened materials designed to withstand the demands of competitive racing and aggressive driving in electric RC buggies, providing excellent longevity even under sustained high-load conditions.
- Easy Installation — Installation is straightforward for anyone with basic RC car maintenance knowledge, requiring only removal of your existing pinion gear and fitting of this replacement component to your motor shaft.
- Performance Tuning Option — Having a selection of pinion gears with different tooth counts allows racers to fine-tune their 1/8 electric RC buggy's performance for specific track conditions, weather, and racing formats.
Technical Performance
The HoBao HYPER SSe/CAGE ELECTRIC 1/8 MOTOR PINION 21T represents the kind of precision engineering that separates HoBao's components from generic aftermarket alternatives. The 21-tooth configuration sits in the middle of HoBao's available pinion range (which includes 19T, 20T, 22T and other options), making it an ideal choice for racers seeking balanced performance. The 5mm shaft diameter is the industry standard for 1/8 scale brushless motor systems, ensuring compatibility with all HoBao Hyper electric motors and many aftermarket alternatives. Gear selection is critical in electric RC buggy performance because it directly affects the final drive ratio, which determines acceleration characteristics, top speed, and overall efficiency of your setup. A 21-tooth pinion paired with a standard spur gear creates a mid-range gear ratio suitable for mixed-terrain racing, high-traction track conditions, and situations where neither maximum acceleration nor maximum speed alone is the priority. The precision machining of the teeth ensures smooth engagement with your spur gear, reducing friction losses and minimising vibration throughout the drivetrain. This results in better power delivery to the wheels, improved handling characteristics, and more predictable performance during competitive racing. For UK-based RC enthusiasts running 1/8 electric buggies on various track surfaces, having the option to change your pinion gear ratio is one of the most effective and affordable performance tuning modifications available, and this genuine HoBao pinion delivers the quality needed for serious competition.
What's in the Box
- 1x HoBao 21-tooth Motor Pinion Gear (5mm shaft bore)
What You Need to Complete
- 1/8 scale HoBao Hyper SS or Cage electric RC buggy or compatible platform
- HoBao brushless electric motor with 5mm shaft (typically 1/8 scale specification)
- Motor pinion installation tools (small screwdriver or hex key for set screw)
- Access to your existing RC buggy's motor assembly for installation
Frequently Asked Questions
- What is the difference between the 19T, 20T, 21T and 22T pinion gears available for the HoBao Hyper electric 1/8 buggy? — The tooth count directly affects your gear ratio and therefore your RC buggy's performance character. A 19T pinion creates a lower gear ratio, favouring acceleration and torque but reducing top speed. A 22T pinion does the opposite, increasing top speed but reducing acceleration. The 21T sits perfectly in the middle, making it ideal for most track conditions and all-round racing. Choose based on your typical racing environment: tighter, technical tracks favour lower tooth counts (19T-20T), while faster, more open tracks benefit from higher counts (21T-22T).
- Is this pinion gear suitable for beginners building their first 1/8 electric RC buggy? — Yes, absolutely. The 21-tooth configuration is an excellent choice for newcomers to 1/8 scale electric RC racing because it provides a balanced performance character that works well in most conditions. Beginners should understand that pinion gear selection is one of the most straightforward and effective ways to tune an electric RC buggy, and this genuine HoBao component is reliable and durable for learning and recreational driving.
- Will this 5mm shaft pinion gear fit any 1/8 scale electric RC buggy? — This pinion is specifically designed for HoBao Hyper SS and Cage electric platforms, and will fit any motor with a 5mm shaft bore that is used in those vehicles. However, 5mm shaft motors are common across many brands, so compatibility with non-HoBao platforms is possible but not guaranteed. Always verify your motor's shaft diameter before purchasing replacement pinions to ensure proper fit.
- How often do I need to replace my motor pinion gear? — With normal recreational use, a quality HoBao pinion gear should last many months to over a year. However, competitive racers or those engaged in aggressive driving may need to replace pinions more frequently as the teeth gradually wear from constant meshing with the spur gear. Signs of wear include increased noise, slight slipping, and reduced acceleration response.
- What tools do I need to install this pinion gear? — Installation is simple and requires only basic RC car maintenance tools: a small hex key or screwdriver to loosen the set screw on your motor, then slide the old pinion off the shaft and slide the new one on. Tighten the set screw firmly but not excessively to avoid stripping the threads or binding the motor shaft.
- Can I use different pinion gear ratios for different racing conditions? — Yes, this is a common practice among competitive RC racers. Having a selection of pinion gears (19T, 20T, 21T, 22T) allows you to optimise your 1/8 electric RC buggy's performance for specific track conditions. Tight indoor tracks typically benefit from lower tooth counts for better acceleration, while open outdoor tracks perform better with higher tooth counts for speed.
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 HOBAO HYPER SSe/CAGE ELECTRIC 1/8 MOTOR PINION 21T (5MM SHAFT) HOP-0038 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.
- Brand: HoBao
- Model Number: HOP-0038
- Product Type: 1/8 Motor Pinion Gear
- Tooth Count: 21
- Shaft Bore Diameter: 5mm
- Compatibility: HoBao Hyper SS and Cage Electric 1/8 buggy platform
- EAN Code: 4711605966795
- Recommended Use: 1/8 electric RC buggy tuning and replacement
- Application: Motor to spur gear drive system
- Manufacturer Origin: HoBao USA
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