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LOS Aluminum Swing Arm, Silver: Promoto-MX Z-LOS364000

Model No: Z-LOS364000


COMING SOON 03/06/2026

Coming Soon - Stock Arriving: 03/06/2026

Stock Arriving: 03/06/2026

£109.99

£11.00

£98.99

Inc VAT & delivery

Delivery Included
1 Year Warranty
We Accept

Overview

Take your Promoto-MX to the next level by removing the stock injected molded swing arm and installing the optional aluminum swing arm for improved durability and aesthetics.

The aluminum swing arm brings a significant boost in durability to your Promoto-MX. Experience enhanced strength and resilience, ensuring that your RC motorcycle can handle the rigors of intense rides and challenging terrains.

Features

  • Precision CNC Machined from 6061-T6 Aluminum
  • Clear Anodized for increased durability.
  • Direct fit option part for the Promoto-MX requiring no other parts.

Video Overview

 

Overview

The LOS Aluminum Swing Arm in silver is a premium upgrade component designed specifically for the Losi 1/4 Promoto-MX motorcycle. If you're looking to take your RC motorcycle to the next level, this optional swing arm replacement is the ideal choice for enthusiasts who demand superior durability and enhanced aesthetics. Whether you're a serious RC racer in the UK or a weekend basher who enjoys pushing your machine to its limits, upgrading from the stock injected moulded swing arm to this professional-grade aluminium alternative will transform your Promoto-MX's performance characteristics and visual appeal.

This swing arm brings a significant boost in durability to your Promoto-MX, delivering the kind of engineering excellence that serious RC hobbyists expect. The upgrade experience enhanced strength and resilience, ensuring that your RC motorcycle can handle the rigors of intense rides and challenging terrains without compromise. The clear anodised silver finish not only provides increased protection against corrosion and wear, but also delivers that premium look that separates a well-maintained RC machine from a stock model. For anyone serious about their Promoto-MX and looking for genuine performance improvements, this is an essential upgrade that delivers real-world benefits during aggressive riding sessions.

When you're investing in ready-to-run RC motorcycles, the quality of individual components makes all the difference. This aluminium swing arm represents the kind of precision engineering that separates hobby-grade RC equipment from race-spec performance parts. Direct fit installation means you can upgrade with confidence, knowing that no additional modifications or parts are required to integrate this component into your existing Promoto-MX setup.

Key Features

  • Precision CNC Machined from 6061-T6 Aluminium — Every swing arm is manufactured using computer numerical control machining processes on premium 6061-T6 aluminium alloy, which is widely recognised across the RC and aerospace industries for its exceptional strength-to-weight ratio and excellent corrosion resistance, ensuring your upgrade will maintain its structural integrity through countless rides and terrain challenges.
  • Clear Anodised Finish for Increased Durability — The professional-grade clear anodising process creates a protective oxide layer that significantly increases the component's resistance to corrosion, oxidation, and physical wear, whilst maintaining the natural silver metallic appearance and allowing you to showcase the precision machining without compromising longevity.
  • Direct Fit Compatible with Promoto-MX Models — This swing arm is engineered as a direct replacement for the stock component, requiring no additional parts, modifications, or specialist tools for installation, making the upgrade process straightforward for RC enthusiasts of all experience levels looking to enhance their existing Promoto-MX motorcycle.
  • Enhanced Strength and Resilience — The transition from injected moulded plastic to precision-machined aluminium delivers a substantial improvement in structural strength, allowing your RC motorcycle to absorb impacts and handle aggressive riding conditions that might damage or flex a stock component, translating directly to improved durability during competitive racing and casual bashing sessions.
  • Professional Aesthetics — Beyond the performance benefits, the clear anodised aluminium swing arm elevates the visual presentation of your Promoto-MX, giving your RC motorcycle that professional, well-maintained appearance that reflects the quality of your setup and demonstrates your commitment to premium RC hobby standards.

Technical Performance

The LOS Aluminum Swing Arm represents a significant engineering upgrade over the standard injected moulded component supplied with your Promoto-MX. Manufactured from 6061-T6 aluminium alloy through precision CNC machining processes, this component offers superior strength and rigidity compared to plastic alternatives. The 6061-T6 specification is deliberately chosen within the RC industry because it provides an optimal balance of machinability, strength, and lightweight characteristics essential for performance-focused upgrades. The clear anodising process adds a protective layer that enhances durability against corrosion, UV exposure, and the general wear that comes from intense RC riding sessions across varied British terrains. This upgrade transforms how your Promoto-MX handles impacts and stress points during aggressive cornering, jumps, and technical riding. The precision-machined construction ensures absolute dimensional accuracy, meaning the swing arm will fit perfectly and function optimally within your Promoto-MX's suspension geometry. For UK-based RC enthusiasts who take their hobby seriously, this represents exactly the kind of component upgrade that demonstrates commitment to maintaining and improving your equipment to competition standards.

What's in the Box

  • LOS Aluminum Swing Arm (single unit)
  • Clear anodised silver finish

Compatibility Information

The LOS Aluminum Swing Arm (Z-LOS364000) is confirmed compatible with the following Promoto-MX motorcycle models:

  • Losi 1/4 Promoto-MX Motorcycle RTR with Battery and Charger, Pro Circuit (C-LOS06002)
  • Losi 1/4 Promoto-MX Motorcycle RTR - Club MX (Blue) (C-LOS06000T2)
  • Losi 1/4 Promoto-MX Motorcycle RTR - FXR (Red) (C-LOS06000T1)
  • Losi 1/4 Promoto-SM FXR Supermoto Motorcycle RTR Basic (C-LOS-2272)
  • Losi 1/4 Promoto-SM FXR Supermoto Motorcycle RTR (Battery and Charger Included) (C-LOS-2310)

Frequently Asked Questions

  • Will this swing arm fit my Promoto-MX without modifications? — Yes, this is a direct fit replacement component designed specifically for Promoto-MX models, requiring no additional parts or modifications for installation. Simply remove your stock injected moulded swing arm and install the aluminium replacement, and you'll immediately benefit from the enhanced durability and professional appearance.
  • What advantages does an aluminium swing arm offer over the stock plastic component? — The aluminium upgrade delivers multiple benefits including superior strength and rigidity, better resistance to impact damage during aggressive riding, improved structural integrity under stress, enhanced corrosion resistance through clear anodising, and a more professional appearance that reflects the quality of your RC setup. For UK-based RC enthusiasts tackling challenging terrains and competitive conditions, these advantages translate into a component that will outlast the stock version and perform more reliably.
  • Is the clear anodising process durable enough for regular RC use? — Absolutely. The clear anodising creates a professional-grade protective oxide layer specifically designed to resist corrosion, oxidation, UV exposure, and physical wear during regular use. This finish is commonly used in aerospace and high-performance applications where durability is essential, making it far more resilient than standard anodising and suitable for the demands of serious RC motorcycling.
  • How does this upgrade compare to other aftermarket swing arm options? — The LOS Aluminum Swing Arm offers precision CNC machining from 6061-T6 aluminium with clear anodising, representing official manufacturer engineering designed specifically for your Promoto-MX model. As an authorised Losi product, you can be confident in the fitment, quality, and compatibility, whereas some aftermarket alternatives may require modifications or offer uncertain compatibility with your specific Promoto-MX variant.
  • Will upgrading the swing arm noticeably improve my Promoto-MX's performance? — This upgrade primarily enhances durability and structural rigidity rather than increasing speed or acceleration. You'll notice improved handling characteristics through corners due to reduced flex in the swing arm, better crash resilience, and significantly extended component lifespan during aggressive riding sessions across varied British terrain conditions.
  • Is professional installation required? — No, this is a direct replacement component that requires only basic RC hobby tools and mechanical knowledge. Most experienced RC enthusiasts will complete the installation in under 30 minutes. If you're new to RC maintenance, the straightforward design makes it an ideal first upgrade project, or you can visit our Walsall store where our team can provide guidance.

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 LOS Aluminum Swing Arm, Silver: Promoto-MX Z-LOS364000 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.