Overview
This is a Pro-Spec Rear Aluminum Hub for Losi® Promoto-SM Rear. Engineered for enthusiasts, this Pro-Spec Aluminum wheel is designed to perform in extreme environments while taking a beating. The Pro-Spec Aluminum Hub is anodized and made from 6061 billet aluminum.
3D print this lacing fixture tool to help with spoke replacements! DOWNLOAD .STL file
PRO284804 | Pro-Spec Aluminum Rear Hub Gold: Promoto-SM
Features
- True to Scale Supermoto-Inspired Appearance
- Anodized CNC Machined 6061 Billet Aluminum Hub
- Replacement Pro-Spec Aluminum Wheel Hub
Overview
The Pro-Line 1/4 Pro-Spec Aluminium Rear Hub Gold is a premium replacement wheel hub designed specifically for the Losi Promoto-SM RC supermoto. This exceptional component is engineered for enthusiasts who demand the highest performance standards from their RC car UK setup. Whether you're a seasoned competitor running your Promoto-SM at the track or a dedicated basher pushing your supermoto to its limits, this Pro-Spec hub delivers the durability and style you need to keep your machine performing at peak levels. Pro-Line Racing has established itself as a trusted name in RC performance components across the United Kingdom and beyond, and this rear hub exemplifies their commitment to quality engineering and attention to detail.
The Pro-Spec Aluminium Rear Hub is engineered for enthusiasts who understand that extreme performance requires extreme durability. This replacement hub is specifically designed to take a beating in extreme environments whilst maintaining perfect balance and reliability. The gold anodised finish not only looks stunning on your Promoto-SM, but also provides superior corrosion resistance and protection against the elements. Whether you're racing on tarmac, bashings in the park, or pushing your supermoto to its absolute limits, this hub will perform when it matters most. The combination of premium materials and precision engineering means you're investing in a component that will give you years of reliable service and competitive performance.
Pro-Line's Pro-Spec range represents the pinnacle of performance upgrades for your RC supermoto. These components are designed from the ground up to enhance your Promoto-SM experience, offering genuine performance improvements and visual enhancements that set your machine apart from the competition. As a UK-based RC enthusiast, you'll appreciate how Pro-Line understands the demands of serious RC racing and recreational bashing. This rear hub is no exception, delivering the kind of quality and reliability that serious RC car UK buyers have come to expect from Pro-Line.
Key Features
- 6061 Billet Aluminium Construction — The hub is machined from premium 6061 billet aluminium, which is renowned for its excellent strength-to-weight ratio, precise machinability, and durability. This material choice ensures the hub can withstand the extreme stresses of competitive racing and aggressive bashing whilst remaining as light as possible, helping to reduce unsprung weight on your Promoto-SM and improve handling characteristics.
- Anodised Gold Finish — The gold anodised coating provides multiple benefits beyond stunning visual appeal. Anodising creates a protective oxide layer that dramatically increases corrosion resistance, protects against UV damage, and ensures the hub maintains its appearance even after months of use in wet and muddy conditions typical of UK RC racing and bashing environments.
- CNC Machined Precision — Every hub is machined to exact tolerances using computer numerical control (CNC) equipment, ensuring perfect consistency and dimensional accuracy. This precision engineering guarantees that your hub will integrate seamlessly with your Promoto-SM's drivetrain and suspension, maintaining perfect wheel alignment and balance.
- True to Scale Supermoto-Inspired Appearance — The Pro-Spec hub design authentically replicates the appearance of real supermoto motorcycle wheels, delivering that distinctive supermoto aesthetic to your RC model. This design philosophy enhances the scale appearance of your Promoto-SM and creates a cohesive, professional-looking machine that turns heads at the track or on the bashing field.
- Spoke-Compatible Design — The hub is specifically engineered to work with Pro-Spec Aluminium SM Rear Rims with spokes, creating a complete wheel system that looks and performs like genuine motorcycle supermoto wheels. The hub-to-rim interface is precisely engineered for perfect fitment and reliable spoke retention.
- Pro-Spec Replacement Hub System — This is a genuine Pro-Spec replacement component, meaning you can upgrade individual hubs without needing to replace entire wheels. This modularity is perfect for racers who want to maintain consistent performance or customize their setup, and for bashers who need to replace worn components without breaking the bank.
- 3D Print Lacing Fixture Tool Available — Pro-Line has published the STL file for a 3D-printable spoke lacing fixture tool, making spoke replacements significantly easier and more precise. This user-friendly approach means you can maintain your hub in perfect condition, with the ability to replace damaged spokes quickly and accurately using a 3D printer, ensuring your Promoto-SM is always ready for action.
Technical Performance
The Pro-Line 1/4 Pro-Spec Aluminium Rear Hub Gold represents the absolute pinnacle of engineering excellence for Losi Promoto-SM owners. Machined from premium 6061 billet aluminium, this hub combines exceptional strength with minimal weight, a critical balance for maintaining the nimble handling characteristics that make supermoto racing so rewarding. The CNC machining process ensures every hub is produced to identical specifications, guaranteeing perfect wheel balance and consistent performance run after run. The anodised gold finish isn't merely cosmetic—the anodising process creates a protective oxide layer that prevents corrosion from moisture, salt spray, and the acidic conditions found in muddy RC racing environments across the United Kingdom. At 1/4 scale, this hub is engineered to handle the substantial forces encountered during high-speed cornering, aggressive braking, and violent impacts that occur during competitive Promoto-SM racing. The hub's spoke-compatible design works seamlessly with Pro-Spec Aluminium SM Rear Rims, creating a complete wheel system where every component is optimised for that specific application. Build quality is exceptional throughout, with sharp edges deburred and all internal surfaces finished smoothly to prevent wear on your tyres and rim tape. The engineering philosophy behind this hub reflects Pro-Line's deep understanding of what serious RC supermoto racers need: components that deliver predictable performance, maintain consistency across multiple runs, and withstand the rigours of competitive and recreational use.
What's in the Box
- 1x Pro-Spec Aluminium Rear Hub in Gold Anodise
Frequently Asked Questions
- Is this Pro-Spec Aluminium Hub compatible with my Losi Promoto-SM? — Yes, this rear hub is specifically engineered for the Losi Promoto-SM and is designed to work with Pro-Spec Aluminium SM Rear Rims with spokes. It is a direct replacement component that will integrate perfectly with your existing Promoto-SM drivetrain and suspension geometry.
- What makes the anodised finish superior to standard painted hubs? — Anodising creates a chemically bonded protective oxide layer that is far more durable than paint. It resists corrosion, UV damage, and physical wear far better than conventional finishes. The gold anodise will maintain its appearance through countless bashing sessions and race days, whereas painted hubs often chip and fade. Additionally, anodising doesn't require any primer or topcoat, making it an inherently more robust finish.
- Can I use this hub with other wheel rims, or only Pro-Spec rims? — This hub is specifically engineered for Pro-Spec Aluminium SM Rear Rims with spokes. The spoke interface and hub geometry are precisely matched to these rims. Using this hub with other rim types may result in poor spoke retention, vibration, or safety issues.
- Why is 6061 billet aluminium the best choice for RC hubs? — 6061 is an aerospace-grade aluminium alloy renowned for its exceptional machinability, weldability, corrosion resistance, and strength-to-weight ratio. It can be precisely machined to tight tolerances, making it ideal for CNC manufacturing. The material is significantly stronger than cast aluminium whilst remaining lighter than steel, making it perfect for RC components where weight savings directly improve performance.
- How do I replace spokes if they become damaged? — Pro-Line publishes the STL file for a 3D-printable spoke lacing fixture tool, making spoke replacement straightforward. You can download this file from Pro-Line's website and print it using any 3D printer. The fixture holds the spokes in perfect alignment whilst you install them, making the process far easier and more precise than manual installation.
- What is the weight of this hub? — Specific weight information is not provided in the manufacturer specifications. However, the use of 6061 billet aluminium means this hub offers excellent strength-to-weight ratio, keeping unsprung weight minimal whilst maintaining exceptional durability.
- Is this suitable for beginners? — This is a premium replacement component designed for enthusiasts who already own a Promoto-SM and want to upgrade or replace their existing hubs. It is not a complete wheels-and-tyres package, so beginners would need to already have a Promoto-SM RC model. The hub itself is straightforward to install for anyone with basic RC maintenance experience.
- What other colours are available in the Pro-Spec hub range? — Pro-Line offers Pro-Spec Aluminium Rear Hubs in multiple colour options including Red, Blue, and Gold, allowing you to customise your Promoto-SM's appearance to match your preferred colour scheme.
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 PRO 1/4 Pro-Spec Aluminum Rear Hub Gold: Promoto-SM G-PRO284804 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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