Carbon Gravel Frame Technology Guide
Everything you need to know about modern carbon gravel frame technology — T47, UDH, Toray carbon, integrated storage, and EN/ISO testing standards.
T47 Threaded Bottom Bracket
The T47 bottom bracket is rapidly becoming the gold standard for premium gravel and road frames. It combines the best of both worlds: the stiffness of a large-diameter press-fit shell with the reliability of a threaded interface.
Why T47 is Better for Gravel
- No creaking — Threaded design eliminates the dreaded press-fit creak
- Easy maintenance — Service with standard tools at home
- Maximum stiffness — 46mm diameter allows for larger bearings and stiffer crankarms
- Compatibility — Works with 24mm (Shimano) and 30mm (SRAM, RaceFace) spindles
UDH Universal Derailleur Hanger
The Universal Derailleur Hanger (UDH) is a game-changing standard developed by SRAM and adopted across the industry. It simplifies rear derailleur mounting and future-proofs your frame.
Key Benefits of UDH
- SRAM Transmission ready — Required for the latest T-Type drivetrains
- Universal availability — Any bike shop carries UDH spares
- Frame protection — The hanger is designed to break first, saving your frame
- Clean integration — Creates a seamless look at the dropout
Fully Internal Cable Routing
All Mondince gravel frames feature fully integrated cable routing through the headset, delivering a clean, aerodynamic profile that's also highly functional.
Why Internal Routing Matters
- Better aerodynamics — Reduced drag compared to external cables
- Clean aesthetics — A professional, premium appearance
- Cable protection — Shifts and brake lines are shielded from dirt and damage
- Compatibility — Works with mechanical, electronic, and hydraulic systems
Integrated Down Tube Storage
Our premium gravel frames feature integrated downtube storage — a game-changer for bikepacking and long-distance riding.
Storage Options
- FM326 — 1.2L capacity, ideal for multi-day expeditions
- FM336 — 0.8L capacity, perfect for tools and essentials
- Weather-sealed hatch — Keeps contents dry and secure
- Rattle-free design — Internal organizer prevents noise
Toray Carbon Fiber Technology
Mondince uses premium Toray T800 and T1000 carbon fiber — the same material trusted by the world's top bicycle brands and aerospace industries.
| Grade | Tensile Strength | Tensile Modulus | Typical Weight | Best For |
|---|---|---|---|---|
| T700 | 4.9 GPa | 230 GPa | 1150-1250g | Entry-level, durability |
| T800 | 5.8 GPa | 295 GPa | 1050-1150g | Adventure, endurance, value |
| T1000 | 7.0 GPa | 315 GPa | 890-980g | Racing, lightweight builds |
All Mondince frames use a blend of T800 and T1000 to achieve the optimal balance of stiffness, weight, and impact resistance. See our collection →
EN & ISO 4210 Testing
Every Mondince frame is tested to 1.3 times the ISO 4210 standard — exceeding international safety requirements by 30%.
What This Means for You
- EN 14766 certified — Mountain bike standard with rigorous impact testing
- ISO 4210 compliant — International bicycle safety standard
- 1.3x safety margin — Extra protection beyond the minimum requirement
- Independent verification — Third-party testing available upon request
Ready to Build Your Carbon Gravel Frame?
Whether you need a single frame or a full OEM production run, Mondince is your trusted manufacturing partner.
✅ Custom geometry | ✅ EN certified | ✅ Low MOQ from 1 set
