Overview
This is a YZStyle Front and Rear Brake Rotor Set for Losi® Promoto-MX/SM. Have you changed the look of your Promoto with tires, wheels, plastics and graphics only to have the wrong rotors that don't go with your replica? These rotors not only look the part, they are durable and add realistic style to your bike. These rotors pair great with the Pro-Spec Aluminum Brake Caliper (PRO640800) for the ultimate brake system.
Upgrade the style and functionality of your Losi Promoto-MX/SM with steel brake rotors from Pro-Line!
PRO642100 | YZ Style Steel Front and Rear Brake Rotor Set for Losi® Promoto-MX/SM
Features
- Steel Front and Rear Rotor Set
- Euro Styling
- Realistic Shape and Vent Hole Patterns
- Pair with Pro-Spec Aluminum Brake Caliper
- Direct fit to Promoto-MX/SM
Overview
Transform the appearance and performance of your Losi Promoto-MX or Promoto-SM 1/4 scale RC motorcycle with the Pro-Line YZ Style Steel Front and Rear Brake Rotor Set. Whether you're an experienced RC enthusiast in the UK or a dedicated Promoto owner looking to upgrade your bike's aesthetics, these steel brake rotors deliver both stunning visual impact and genuine functional improvement. If you've already invested in new tyres, wheels, plastics and graphics for your Promoto, you'll understand the frustration of having brake rotors that don't match your carefully curated replica build. This Pro-Line solution addresses that exact problem by combining authentic YZ-inspired styling with durable steel construction that genuinely enhances your motorcycle's braking system.
Pro-Line has engineered these rotors to capture the authentic look of full-size Yamaha YZ motocross bikes, featuring realistic shape and vent hole patterns that instantly elevate your 1/4 scale machine's visual presence. These aren't just aesthetic upgrades—they're functional components designed to work seamlessly with your Promoto's braking system whilst adding that premium, race-ready appearance that serious RC builders demand. For anyone who has invested time and effort into customising their RC motorcycle in the UK, these rotors represent the final touch that ties your entire build together with authenticity and style.
Available now through RC Model Shop, the Pro-Line 1/4 YZ Style Steel F/R Brake Rotor Set is the perfect complement to your Promoto upgrade journey. Pair these rotors with the optional Pro-Spec Aluminium Brake Caliper (PRO640800) to create the ultimate brake system for your machine.
Key Features
- Steel Front and Rear Rotor Set — This product includes both front and rear brake rotors manufactured from durable steel material, ensuring long-lasting performance and authentic appearance that mirrors real motocross bike specifications.
- YZ Style Authentic Design — The rotors feature genuine Yamaha YZ motocross-inspired styling that immediately elevates your Promoto's visual presence and demonstrates your commitment to accurate replica detailing.
- Realistic Shape and Vent Hole Patterns — Engineered with authentic vent hole patterns and realistic disc shapes that mirror full-size motorcycle brake rotors, these components add genuine technical detail to your 1/4 scale build.
- Direct Fit Compatibility — These rotors are precision-engineered for direct fit installation on your Losi Promoto-MX or Promoto-SM, requiring no modifications or additional adapters for seamless integration.
- Enhanced Braking Functionality — Beyond pure aesthetics, steel rotors offer improved thermal properties and durability compared to standard components, providing more reliable braking performance during extended running sessions.
- Pro-Spec Brake Caliper Compatible — These rotors pair perfectly with the Pro-Spec Aluminium Brake Caliper (PRO640800), allowing you to build a complete, cohesive brake system that combines stunning looks with premium functionality.
- Build Completion Solution — If you've already upgraded your Promoto with new tyres, wheels, custom plastics and graphics, these rotors complete your replica build by ensuring every component shares a unified, authentic aesthetic.
Technical Performance
The Pro-Line 1/4 YZ Style Steel F/R Brake Rotor Set represents a thoughtful engineering solution that addresses both form and function for serious Promoto builders. Manufactured from steel, these rotors deliver superior durability and heat dissipation properties compared to plastic alternatives, making them ideal for RC enthusiasts who regularly run their machines and demand components that can withstand extended use. The realistic vent hole patterns aren't merely decorative—they're functional design elements that enhance airflow around the rotors, improving thermal management during braking events. With front and rear rotors included, this is a complete solution that eliminates the need for multiple purchases and ensures visual consistency across your entire brake system. The direct fit design means you'll achieve perfect alignment and integration with your Promoto-MX or Promoto-SM without requiring any modification work. For UK RC builders serious about achieving showroom-quality finish alongside genuine performance improvements, these steel rotors represent a worthwhile investment that transforms your machine's appearance whilst delivering measurable functional benefits.
What's in the Box
- Front Brake Rotor
- Rear Brake Rotor
Frequently Asked Questions
- Will these rotors fit my Losi Promoto motorcycle? — Yes, these rotors are designed as a direct fit solution for both the Losi Promoto-MX and Promoto-SM models. They require no modifications and integrate seamlessly with your existing brake system.
- What vehicles are these rotors compatible with? — These YZ style steel brake rotors are specifically engineered for the Losi 1/4 Promoto-MX Motorcycle RTR and Losi 1/4 Promoto-SM FXR Supermoto Motorcycle RTR models, including all Club MX, FXR and other variant versions.
- Can I use these rotors without upgrading my brake calipers? — Yes, these rotors will work with your existing brake system. However, Pro-Line recommends pairing them with the Pro-Spec Aluminium Brake Caliper (PRO640800) for the ultimate complete brake system that combines stunning aesthetics with premium performance.
- Are these rotors purely cosmetic? — No, whilst the YZ styling certainly enhances your Promoto's visual appeal, the steel construction and realistic vent hole patterns provide genuine functional benefits including improved heat dissipation, better thermal management and enhanced durability compared to standard components.
- What scale are these rotors? — These are 1/4 scale brake rotors designed specifically for Losi's quarter-scale Promoto motorcycle range, featuring proportionate dimensions and realistic detailing appropriate to this scale.
- How do these compare to standard Promoto rotors? — The primary difference is material and design—these Pro-Line rotors are manufactured from steel and feature authentic YZ motocross styling with realistic vent patterns, whereas standard Promoto rotors are typically plastic and lack detailed replica design elements.
- Will upgrading to these rotors improve my braking performance? — Steel rotors offer superior thermal properties and durability compared to plastic alternatives, potentially delivering more consistent braking performance during extended running sessions, though performance improvement will be most noticeable if paired with upgraded brake calipers.
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 YZ Style Steel F/R Brake Rotor Set: Promoto-MX/SM G-PRO642100 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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- 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.
