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
PRO284803 | Pro-Spec Aluminum Rear Hub Red: 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 Aluminum Rear Hub Red is a premium replacement wheel hub designed specifically for the Losi Promoto-SM supermoto-style RC model. This is a sophisticated component engineered for serious RC enthusiasts who demand durability and performance from their RC car parts in the UK market. Whether you're a dedicated competitor or a weekend basher pushing your Promoto-SM to its limits, this Pro-Spec rear hub represents the pinnacle of aftermarket upgrade quality for your supermoto machine.
Manufactured by Pro-Line Racing, a recognised leader in high-performance RC components, this rear hub has been specifically developed to withstand extreme environments and take a genuine beating. The engineering philosophy behind this product is simple but effective: create a wheel hub that combines authentic supermoto styling with real-world durability and reliability. If you're searching for quality RC car spares UK retailers stock, this Pro-Spec hub stands out as a genuine performance upgrade that will transform your Promoto-SM's capabilities.
This is not a basic replacement part—it's a precision-engineered component crafted from 6061 billet aluminium that has been CNC machined and anodised for superior corrosion resistance and aesthetic appeal. The striking red colour finish gives your Promoto-SM an aggressive, competition-ready appearance whilst the underlying engineering ensures your investment is protected against the rigours of serious RC driving.
Key Features
- True to Scale Supermoto-Inspired Appearance — The Pro-Spec hub features authentic supermoto styling that transforms your Promoto-SM into a scale model that truly captures the aesthetic of full-size supermoto motorcycles, making it instantly recognisable and visually impressive whether you're racing at a dedicated RC track or bashing in your local park.
- Anodised CNC Machined 6061 Billet Aluminium Construction — Every hub is precision-engineered from premium 6061 billet aluminium, then anodised to create a hard, corrosion-resistant surface that protects the underlying metal whilst maintaining the vibrant red colour finish for years of use in all weather conditions typical of UK RC driving.
- Replacement Pro-Spec Aluminum Wheel Hub — As a direct replacement component, this hub integrates seamlessly with the Pro-Spec Aluminum SM Rear Rim with Spokes, ensuring perfect fitment and compatibility without requiring any modification to your existing Promoto-SM setup.
- Designed for Extreme Performance Environments — Engineered specifically to perform reliably in extreme conditions, this hub absorbs impacts and stresses that would damage lesser components, making it the ideal upgrade for drivers who regularly push their RC models hard and expect their parts to keep up with their driving style.
- 3D Printable Lacing Fixture Tool Available — Pro-Line provide the CAD files (downloadable as an .STL file) for a 3D printed lacing fixture tool, enabling you to replace spokes with confidence and precision, ensuring your wheel remains true and balanced for consistent performance.
Technical Performance
The Pro-Spec Aluminum Rear Hub Red represents a significant engineering achievement in 1/4 scale RC component design. Constructed entirely from 6061 billet aluminium—the same material specification used in aerospace and precision engineering applications—this hub delivers exceptional strength-to-weight ratio that directly translates to better acceleration, handling and overall performance of your Promoto-SM. The CNC machining process ensures tolerances are held to exacting standards, meaning every hub produced meets the same high quality criteria. The anodised finish isn't merely cosmetic; anodising creates a chemical barrier that prevents oxidation and corrosion, critical when your RC model is regularly exposed to moisture, dirt and temperature variations typical of UK weather conditions. The red colour finish is vibrant and durable, maintaining its appearance through countless hours of driving. This component is specifically designed to integrate with the Pro-Spec Aluminum SM Rear Rim with Spokes, and together they create a wheel assembly that combines authentic supermoto styling with genuine performance benefits. The hub's robust construction means it can absorb the impacts inherent in aggressive driving, whether you're tackling rough terrain, jumping obstacles or pushing maximum speed down a straight. For RC enthusiasts in the UK seeking to upgrade their Promoto-SM with components that will genuinely improve performance and reliability, this Pro-Spec hub is an investment that pays dividends in durability and driving satisfaction.
What's in the Box
- 1 x Aluminum Rear SM Hub (Red)
Frequently Asked Questions
- Is this Pro-Spec hub suitable for beginners with RC cars? — Whilst this is a replacement component rather than a complete RC car, it's suitable for anyone who already owns a Promoto-SM and wants to upgrade their rear wheel hub. If you're new to RC and just purchasing your first Promoto-SM, you may wish to start with the stock components and add this upgrade after you've gained experience. However, if you're already familiar with maintaining RC models, this upgrade is absolutely worth considering from day one.
- What makes this Pro-Spec hub different from stock Promoto-SM components? — The stock hub uses standard materials, whereas this Pro-Spec version uses premium 6061 billet aluminium that has been CNC machined and anodised. This means superior durability, better impact resistance, reduced weight, and a more premium appearance. The Pro-Spec hub is engineered for serious enthusiasts who demand more from their RC equipment.
- Will this hub work with my existing Promoto-SM? — Yes, this is a direct replacement rear hub specifically designed for the Losi Promoto-SM. It integrates seamlessly with the Pro-Spec Aluminum SM Rear Rim with Spokes. Ensure you're purchasing the correct rear hub (not the front hub) and that the red colour matches your desired aesthetic.
- How do I replace the spokes on this hub? — Pro-Line provide a downloadable .STL file for a 3D printed lacing fixture tool that guides you through spoke replacement with precision. If you have access to a 3D printer or know someone who does, you can print this tool and follow Pro-Line's guidance. Alternatively, if you're comfortable working with RC components, you can replace spokes freehand, but the fixture tool ensures better alignment and wheel balance.
- Why is anodising important on an RC component? — Anodising creates a hard, corrosion-resistant oxide layer on the aluminium surface. This is especially important for RC cars in the UK where moisture, salt (near coastal areas) and varying temperatures are common. The anodised finish protects your investment, maintains the vibrant red colour, and ensures the hub performs reliably season after season.
- Is this a performance upgrade or just cosmetic? — Whilst the authentic supermoto styling is certainly attractive, this is a genuine performance upgrade. The 6061 billet aluminium construction is stronger and lighter than standard materials, the CNC machining ensures perfect tolerances, and the overall engineering delivers real benefits in durability, impact resistance and reliability during aggressive driving.
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 Red: Promoto-SM G-PRO284803 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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