Titanium M5 Boss – Titanium Mounting Points for Racks, Fenders & Water Bottle Cages
What Is an M5 Boss?
The M5 boss (also known as a braze-on, insert, or threaded mount) is the threaded insert that is welded or brazed into a bicycle frame to provide secure attachment points for accessories. These versatile mounts are the standard across road, gravel, mountain, and bikepacking frames, accommodating:
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🚰 Water bottle cages — The most common use, keeping hydration within easy reach
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🧳 Racks and panniers — Secure cargo mounting for commuting or touring
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🛡️ Fenders/mudguards — Reliable attachment points for all-weather protection
Our titanium M5 boss provides the secure, precise mounting point needed for reliable accessory attachment — whether you're building a lightweight road bike, an adventure gravel rig, a rugged mountain frame, or a touring bike.
| Specification | Details |
|---|---|
| Material | Ti-6Al-4V (Grade 5 Titanium) |
| Thread Size | Standard M5 with 0.8mm pitch |
| Application | Rack mounts, fender mounts, water bottle cage mounts |
| Finish | Precision-machined, smooth surface |
"Note: price is only for one piece."
Installation Notes
The M5 boss is typically TIG welded or brazed into the frame at the designated mounting position.
Important considerations:
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Ensure proper alignment before welding
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Use appropriate heat control to maintain material properties
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Post-weld cleaning recommended for cosmetic finish
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Maximum recommended torque for M5 threads: 6 Nm
Questions or Custom Orders?
Need a different thread size, custom length, or have a specific requirement?
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