Ultralight Alloy Bike Rear Derailleur Guard & Mount Bracket

Ultralight Aluminium Alloy Bicycle Rear Derailleur Guard & Gear Mount Bracket

Upgrade your ride with this precision-crafted aluminium alloy rear derailleur guard and gear mount bracket. Designed for cyclists who demand both protection and functionality, this ultralight quick-release component keeps your derailleur safe while adding versatile mounting options for accessories. Available in classic black or red to match your build. Made in Mainland China.

Key Features

• Derailleur Protection: The guard creates a flat, low-profile shield over the rear derailleur's convex surface, preventing scratches and cosmetic damage when the bike is laid flat or parked — keeping your ride looking its best.
• Kickstand Substitute: Most high-end and lightweight bikes skip the kickstand to save weight. This bracket provides a convenient resting solution without adding unnecessary bulk to your setup.
• Accessory Expansion Rack: Free up handlebar space by mounting tail lights, bike lights, or wire controllers directly to this rear bracket — a must-have for long-distance and touring riders.
• Quick-Release Compatible: Replaces standard quick-release screw caps, making it ideal for folding bikes and mountain bikes that require tool-free wheel removal. Small modification, big impact.
• Ultralight Construction: Made from high-quality aluminium alloy for a durable yet featherlight addition to your drivetrain setup — no compromise on performance.

Specifications

• Material: Aluminium Alloy
• Colors Available: Black / Red
• Model Number: ATMA27H26
• Compatible Use: Road bikes, mountain bikes, folding bikes
• Package Contents: 1 × Rear Derailleur Protector Guard / Mount Bracket
• Origin: Made in Mainland China

Why Cyclists Love This Guard

Whether you're commuting, trail riding, or gearing up for a long-distance adventure, protecting your rear derailleur from accidental knocks is a smart, low-cost upgrade. This bracket does double duty — safeguarding your drivetrain and giving you a convenient spot to mount lighting or electronic accessories where handlebar space is limited.

Pair your bike build with other great DIY accessories from our store:

• Stainless Steel Cord End Caps with Loop – Jewelry Findings
• Stainless Steel Flat Disc Spacer Beads Gold Silver – 20-50pcs

Learn more: OSHA on personal protective equipment

Frequently Asked Questions

Q: Is this rear derailleur guard compatible with all bike types?

A: This aluminium alloy derailleur guard is designed to fit most standard quick-release axle configurations, making it compatible with road bikes, mountain bikes, and folding bikes. It replaces the standard quick-release screw cap, so any bike with a quick-release rear axle can use it. Always check your axle size against the product images before purchasing.

Q: Can I mount accessories like lights or electronics to this bracket?

A: Yes! One of the standout features of this derailleur guard bracket is its ability to serve as an expansion mounting point for tail lights, bike lights, and wire controllers. This is especially useful for riders who have run out of handlebar space and need a rear mounting solution for long-distance or night riding setups.

Q: What colors does this derailleur protector come in?

A: The bracket is available in two color options — black and red — so you can match it to your bike's existing aesthetic or add a bold contrast accent to your build.

Q: How does this guard protect the rear derailleur?

A: The rear derailleur on most bikes has a convex profile that protrudes outward, making it vulnerable to scratches and impact when the bike is laid flat on the ground or leaned against a surface. This guard covers and shields that exposed area, preserving both the derailleur's function and your bike's appearance.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.