Overview
This is a Pro-Spec Rear SM Wheel Spoke Kit. These are true-to-scale zinc-plated steel spokes for precise truing and durability on the Pro-Spec Aluminum SM Rear Wheel. Replace spokes as needed with easily identifiable dots on the head of the spoke.
3D print this lacing fixture tool to help with spoke replacements! DOWNLOAD .STL file
PRO284801 | Pro-Spec Rear Wheel Spoke Kit for Promoto-SM
Features
- True to Scale Supermoto-Inspired Appearance
- Zinc Plated Steel Spokes for Precise Truing and Durability
- Dot markings for easy identification ( 1 dot = Medium, 2 dot = Long )
- Max torque: 4 Kg/cm or 358 oz/in
- Replacement Pro-Spec Aluminum Wheel Rear Spokes
Overview
The PRO 1/4 Pro-Spec Rear Wheel Spoke Kit for Promoto-SM is an essential replacement component for serious RC motorcycle enthusiasts in the UK who demand authenticity and performance. This genuine Pro-Line Racing spoke kit comprises precision-engineered zinc-plated steel spokes designed to maintain the true-to-scale supermoto-inspired appearance of your Pro-Spec Aluminum Rear Wheel whilst delivering exceptional durability and reliable performance. Whether you're a competitive rider pushing your Losi Promoto-SM to its limits or a dedicated hobbyist who appreciates scale accuracy and quality engineering, these replacement spokes ensure your wheel maintains its structural integrity and visual appeal through countless hours of RC motorcycle action.
Pro-Line Racing has established itself as a trusted name in the RC motorcycle community, and this spoke kit exemplifies their commitment to realistic detail combined with genuine performance improvements. The kit contains everything you need to service, repair or customise your Pro-Spec Aluminum wheel without purchasing an entirely new pre-assembled unit. This makes it an economical choice for dedicated RC motorcyclists who want to maintain or refresh their equipment. The easy-to-identify dot markings on each spoke head make installation straightforward, whether you're performing routine maintenance or undertaking custom colour combinations with replacement hubs and rims.
As part of the Pro-Spec Aluminum wheel system for 1/4 scale RC motorcycles, these spokes are engineered to withstand the demands of serious riding. From bashers enjoying track time to RC competitors seeking reliable equipment, this spoke kit represents a practical investment in keeping your Promoto-SM performing at its best. Available now in the UK through RC Model Shop, this authentic Pro-Line component delivers the quality and precision you'd expect from a recognised leader in scale RC motorcycle technology.
Key Features
- Zinc-Plated Steel Construction — The spokes are manufactured from zinc-plated steel which provides exceptional durability and resistance to corrosion whilst allowing precise truing and adjustment, essential for maintaining wheel balance and performance during high-speed runs and competitive riding.
- True-to-Scale Supermoto Appearance — These spokes maintain the authentic supermoto-inspired visual design that makes Pro-Spec wheels instantly recognisable, allowing your 1/4 scale Promoto-SM to showcase genuinely realistic motorcycle styling that stands out from basic wheel designs.
- Easy Identification Dot Markings — Each spoke is marked with either one dot for medium 47.0mm spokes or two dots for long 48.75mm spokes, eliminating confusion during installation and making spoke replacement or wheel servicing straightforward even for less experienced builders.
- Replacement Hub and Rim Compatible — These spokes are designed to work with Pro-Spec Aluminum rear hubs and rims, allowing you to rebuild complete wheels or experiment with custom colour combinations by mixing and matching different colour-coded components.
- Precise Truing and Adjustment — The zinc-plated steel composition allows for accurate wheel truing and spoke tension adjustment, critical for maintaining balanced, vibration-free wheels that perform reliably at speed and extend the overall lifespan of your RC motorcycle.
- Maximum Torque Rating of 4 Kg/cm (358 oz/in) — This robust torque specification ensures spokes can handle the demanding loads experienced during aggressive riding, jumps, and competitive use without loosening or failing prematurely.
Technical Performance
The PRO 1/4 Pro-Spec Rear Wheel Spoke Kit delivers engineering excellence specifically tailored to 1/4 scale RC motorcycles like the Losi Promoto-SM. The spoke kit comprises 18 medium spokes measuring 47.0mm in length and 18 long spokes measuring 48.75mm in length, providing the complete set needed for full wheel assembly or comprehensive spoke replacement. The zinc-plated steel construction represents a significant performance advantage over basic plastic or lower-grade alternatives, offering superior strength-to-weight ratio and the ability to maintain precise spoke tension over extended use. The dot-marking identification system (one dot for medium, two dots for long) is engineered for clarity and accuracy, eliminating the risk of installing incorrect spoke lengths during assembly or repair. With a maximum torque specification of 4 kilogrammes per centimetre (or 358 ounces per inch), these spokes are engineered to handle the dynamic loads generated by aggressive cornering, acceleration, braking and aerial manoeuvres. The precise spoke angle geometry integrated into the Pro-Spec wheel design works in conjunction with these high-quality replacement spokes to maintain wheel balance, reduce vibration and ensure consistent performance during competitive and recreational riding. These spokes integrate seamlessly with genuine Pro-Line Pro-Spec Aluminum rear hubs and rims, available in various anodised colours, allowing enthusiasts to customise their motorcycles whilst maintaining the exact engineering tolerances required for optimal performance.
What's in the Box
- 18x One Dot (47.0mm) Medium Spokes
- 18x Two Dot (48.75mm) Long Spokes
Frequently Asked Questions
- What motorcycles are these spokes compatible with? — These spokes are specifically designed for the Pro-Spec Aluminum rear wheel on the Losi 1/4 Promoto-SM supermoto RC motorcycle. They are engineered to work exclusively with genuine Pro-Spec Aluminum rear hubs and rims, ensuring precise fitment and optimal performance for this platform.
- Can I use these spokes with other wheel types or brands? — No, these spokes are purpose-engineered for Pro-Line's Pro-Spec Aluminum wheel system and are not compatible with standard plastic wheels or wheels from other manufacturers. Using them with incompatible components could result in poor fitment and compromised wheel balance.
- How do I identify which spokes are which length? — The identification is straightforward: medium spokes measuring 47.0mm are marked with one dot on the spoke head, whilst long spokes measuring 48.75mm are marked with two dots. This makes assembly, repair and spoke replacement clear and error-free, even for those undertaking their first wheel build.
- Why would I need to replace spokes on my RC motorcycle wheel? — Spokes can become bent, cracked or corroded after impacts, aggressive riding, or extended storage. Individual spoke replacement is far more economical than purchasing an entire new pre-assembled wheel, and allows you to maintain peak performance and authentic appearance without significant expense.
- What is the maximum torque I can safely apply to these spokes? — The maximum torque specification is 4 kilogrammes per centimetre (equivalent to 358 ounces per inch). This rating ensures the spokes can withstand the forces generated during aggressive riding, jumps and competitive use whilst remaining secure and balanced.
- Are these spokes suitable for beginners? — Whilst these are genuine quality components, spoke replacement and wheel building requires some mechanical skill and patience. Beginners might wish to consider purchasing a complete pre-assembled Pro-Spec wheel initially, though the detailed dot-marking system makes individual spoke replacement more accessible than many alternatives.
- Can I mix medium and long spokes on the same wheel? — The Pro-Spec wheel design uses a specific lacing pattern with predetermined positions for both medium and long spokes. Following the wheel's engineering and using the correct spoke length at each position is essential for proper wheel balance, strength and performance. Mixing spoke types incorrectly could compromise these critical attributes.
- Do these spokes come pre-laced into a wheel? — No, this kit contains loose individual spokes for replacement purposes. If you need a complete pre-assembled wheel, Pro-Line offers fully-laced and factory-trued Pro-Spec Aluminum rear wheels as separate products. Individual spoke kits are ideal for servicing and repairing existing wheels.
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 Rear Wheel Spoke Kit: Promoto-SM G-PRO284801 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.
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