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SKU: RRDR0445

SunRace M900 9-Speed Rear Derailleur | Medium Cage, Black Anodized Aluminum Build, Adjustable Chain Stabilizer, Shimano Mountain Compatibility, Durable Alloy Components for MTB & Trail Cycling

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Description
Specifications

Elevate your mountain biking performance with the SunRace M900 Rear Derailleur - a precision-engineered, reliable component designed specifically for 9-speed MTB drivetrains. Built with durability and smooth shifting in mind, this high-quality derailleur is perfect for trail enthusiasts seeking enhanced gear performance and lightweight construction.

Materials & Construction

Crafted from premium alloy materials, the SunRace M900 Rear Derailleur features an alloy bracket, alloy outer link, and alloy outer cage, combining strength and lightweight properties for optimal cycling efficiency. Its durable construction ensures resistance to rugged trail conditions, making it an ideal upgrade for aggressive mountain biking adventures.

Performance & Engineering

Designed for seamless gear transitions, the SunRace M900 incorporates an adjustable chain stabilizer that minimizes chain slap and enhances shift accuracy across diverse terrains. With a medium cage length, it accommodates cassettes up to 51-tooth sprockets, providing a wide gear range for climbing steep inclines and fast descents. Weighing just 270 grams, it offers an excellent balance of lightweight performance and robust durability.

Components & Technology

Compatible with Shimano mountain bike shifters and featuring Shimano Rear Direct Mount compatibility, the SunRace M900 ensures precise indexing and compatibility with most 9-speed drivetrains. Its advanced engineering promotes consistent, crisp shifts even under heavy loads or rough trails.

Style & Use Case

Finished in sleek black, the SunRace M900 adds a professional, aesthetic appearance to your mountain bike. Whether you're conquering rugged trails, tackling technical climbs, or simply enjoying off-road adventures, this rear derailleur provides the reliability and performance you need to stay confident in challenging conditions.

Innovative Features

Experience smooth, responsive shifting with the adjustable chain stabilizer that reduces chain noise and improves chain retention. Its all-alloy construction not only enhances durability but also contributes to a lightweight profile, giving you faster, more precise gear changes on every ride.

Upgrade your mountain bike today with the SunRace M900 Rear Derailleur-powered by innovative engineering, crafted from premium materials, and built for serious trail performance. Maximize your ride quality and gear versatility with this top-tier component designed for demanding MTB enthusiasts.

  • High-performance 9-speed MTB rear derailleur engineered for durability and smooth shifting, featuring an adjustable chain stabilizer for improved chain retention on rough trails.
  • Constructed with lightweight, corrosion-resistant alloy components including the outer cage, outer link, and bracket, ensuring long-lasting performance and minimal weight for aggressive trail riding.
  • Compatible with Shimano mountain bike shifters and designed for Shimano Rear Direct Mount systems, providing seamless integration with a wide range of modern MTB drivetrains.
  • Engineered with a medium cage length and a largest cog capacity of 51 teeth, optimized for versatile gearing setups and enhanced climbing ability on steep ascents and technical terrain.
  • Sleek black finish with cutting-edge engineering and reliable components, making it ideal for mountain bikers seeking durability, precise shifting, and a clean, stylish look for aggressive trail and mountain biking applications.
Largest Cog51
Rear Der/Shifter CompatibilityShimano Mountain
Rear Derailleur Mount TypeShimano Rear Direct Mount
Drivetrain Speeds8
Drivetrain Speeds9
Cage LengthMedium
ColorBlack
Weight270
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Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

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Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

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