Overview
This is a Pro-Spec Front Aluminum Hub for Losi® Promoto-SM Front. 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
PRO284702 | Pro-Spec Aluminum Front Hub Blue: 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 Front Hub in Blue is an essential replacement component designed specifically for the Losi Promoto-SM supermoto-style RC car. This premium wheel hub has been engineered for enthusiasts who demand reliable performance in extreme riding conditions whilst maintaining authentic supermoto-inspired aesthetics. Whether you're upgrading your Promoto-SM or replacing a worn component, this Pro-Spec hub delivers the durability and precision engineering that serious RC car UK enthusiasts expect from Pro-Line Racing products. The blue anodised finish not only provides superior corrosion resistance but also adds visual appeal to your build, complementing the true-to-scale appearance of the Promoto-SM platform.
Built from 6061 billet aluminium and precision CNC machined, this front hub is engineered to withstand the rigours of competitive racing and recreational bashing alike. The Pro-Spec range represents Pro-Line's commitment to performance tuning and component reliability, making it the trusted choice for riders seeking to optimise their RC vehicle. This replacement hub is the perfect solution for those who have damaged their original wheel hub or who are looking to upgrade to higher-quality components that will enhance handling and durability. As a critical drivetrain component, the quality of your wheel hub directly impacts the performance characteristics of your ready to run RC supermoto, making this an investment in consistent, responsive handling.
RC Model Shop stocks genuine Pro-Line products for customers throughout the UK, ensuring you receive authentic, manufacturer-backed components with full warranty support. This Pro-Spec Aluminium Front Hub is compatible with the Pro-Spec Aluminium SM Front Rim with Spokes, creating a complete wheel assembly that delivers race-proven performance and distinctive styling that sets your Promoto-SM apart from standard builds.
Key Features
- Anodised CNC Machined 6061 Billet Aluminium Construction — Precision engineering combined with premium material selection ensures this hub offers exceptional strength-to-weight ratio whilst resisting corrosion through the hard anodised blue finish, meaning your investment will maintain its appearance and structural integrity through countless hours of riding.
- True to Scale Supermoto-Inspired Appearance — The design aesthetics draw inspiration from real supermoto motorcycle wheel hubs, giving your 1/4 scale RC car an authentic, purposeful look that appeals to riders who appreciate scale realism and detailed finishing in their builds.
- Replacement Component for Promoto-SM — Specifically engineered as a direct replacement hub for the Losi Promoto-SM front wheel assembly, ensuring perfect fitment and compatibility without modification or adjustment, making installation straightforward for both experienced builders and those new to RC hobby upgrades.
- Compatible with Pro-Spec Aluminium SM Front Rim with Spokes — This hub pairs seamlessly with Pro-Line's matching Pro-Spec rim to create a complete, high-performance wheel assembly that optimises both appearance and performance characteristics of your Promoto-SM platform.
- Premium Material Selection for Extreme Environments — The 6061 aluminium billet provides excellent fatigue resistance, crucial for absorbing the repetitive stresses experienced during aggressive riding, track racing, and outdoor RC adventures in variable UK weather conditions.
- Hard Anodised Blue Finish — The anodising process creates a protective oxide layer that resists wear, corrosion, and UV fading, ensuring the hub retains its vibrant blue colour and protective properties whether used on dusty tracks or in damp British climate conditions.
Technical Performance
The Pro-Line Pro-Spec Aluminium Front Hub represents the pinnacle of precision engineering for 1/4 scale supermoto-style RC cars. Machined from high-grade 6061 billet aluminium, this component undergoes rigorous CNC processing to achieve exact tolerances that ensure perfect hub-to-rim interface and smooth bearing integration. The choice of 6061 aluminium is deliberate—this alloy offers the optimal balance between strength and weight, critical factors in a component that must withstand cornering forces, acceleration loads, and the repetitive impacts of riding over varied terrain. The hard anodised blue finish goes beyond aesthetics; it provides genuine corrosion protection whilst creating a smooth, durable surface that resists the wear patterns that develop from repeated assembly and disassembly cycles during maintenance or wheel changes. For riders in the UK who expose their RC cars to rain, mud, and coastal environments, this protective finish ensures longevity. The hub's design integrates seamlessly with Pro-Line's Pro-Spec rim system, creating a matched pairing that optimises rotational balance, load distribution, and overall handling characteristics. This is not merely a visual upgrade but a performance-focused component that contributes to improved steering response and reduced unsprung weight—factors that directly influence corner entry speed and mid-corner stability in supermoto-style riding.
What's in the Box
- 1x Aluminium Front Hub (Blue, anodised)
Frequently Asked Questions
- Is the Pro-Spec Aluminium Front Hub suitable for my Losi Promoto-SM? — Yes, this hub is specifically engineered as a direct replacement component for the Losi Promoto-SM front wheel assembly. It is compatible with the Pro-Spec Aluminium SM Front Rim with Spokes and will integrate perfectly with your existing Promoto-SM platform without requiring any modifications or additional adapters.
- What is 6061 billet aluminium and why is it used in this hub? — 6061 billet aluminium is a premium aerospace-grade alloy chosen for its exceptional strength-to-weight ratio and fatigue resistance. This material is harder and more durable than standard aluminium, making it ideal for suspension and drivetrain components that experience repetitive loading and impact forces during aggressive RC riding.
- Will the blue anodised finish protect against corrosion? — The hard anodised finish creates a protective oxide layer that provides genuine corrosion resistance, essential for UK riders whose vehicles are exposed to damp conditions, salt air near coastal areas, and muddy terrain. The anodising process also increases surface hardness, helping the hub resist wear from regular assembly and maintenance cycles.
- Can I use this hub as a direct replacement? — Yes, this Pro-Spec Aluminium Front Hub is a true direct replacement for the original Promoto-SM front hub. Simply remove your existing hub and install this component—no modifications or special tools are required beyond standard RC car maintenance equipment.
- Is this component suitable for beginners upgrading from standard parts? — Absolutely. Whilst this is a performance-focused component, it is straightforward to install and requires no special skills or knowledge. Beginners looking to upgrade their Promoto-SM to higher-quality components will find this hub accessible and immediately beneficial in terms of durability and handling responsiveness.
- What makes this Pro-Spec hub different from standard hubs? — The Pro-Spec designation indicates that this hub has been specifically engineered for enhanced performance, durability, and aesthetics compared to standard components. The combination of precision CNC machining, premium 6061 aluminium, and the hard anodised finish creates a component that offers superior corrosion resistance, better load distribution, and a more authentic, scale-realistic appearance.
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-Line 1/4 Pro-Spec Aluminium Front Hub Blue: Promoto-SM 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:
- 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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
