The XC181 Carbon Mountain Frame is engineered from a holistic performance perspective, where every design decision is guided by the core objective of harmonizing lightweight efficiency with dynamic trail compliance. Our R&D process begins with the strategic selection of Toray T800+T1000 carbon fiber, utilizing a multi-layup mapping technique to reinforce high-stress zones while trimming weight in low-impact areas. This material synergy creates a frame that is not only exceptionally stiff for direct power transfer during climbs and sprints, but also resilient enough to withstand repeated trail impacts. The advanced suspension kinematics are tuned to deliver 100-120mm of progressive travel, balancing pedaling efficiency with supple small-bump sensitivity. We optimized the geometry to accommodate modern 29er wheels and wide 2.4" tires, enhancing both rolling speed and traction. The modular rear axle system (compatible with both 142x12mm and 148x12mm standards) and a BB92 bottom bracket ensure broad component compatibility and long-term adaptability. Ultimately, the XC181 embodies our commitment to creating a versatile, race-ready platform that empowers riders to push their limits, whether climbing steep gradients or carving through technical singletracks.

Cross Country Racing Bike Frames 29er
Material and Build Quality
Toray T1000 Carbon Fiber: High-grade carbon material ensures superior strength-to-weight ratio, durability, and stiffness for efficient power transfer.
Lightweight Design: The frame is optimized for both climbing and technical descents.
Suspension System
Full Suspension Design: Smooths out rough trails with advanced suspension geometry for maximum comfort and control.
Rear Shock Compatibility: Compatible with a wide range of shocks for riders who want to customize their setup.
Specification
| Frame | XC181 |
| Material | Toray T800+T1000 carbon fiber |
| size | 15.5"/17.5"/19"/21" |
| Rear Shock | 165*38mm |
| Tire | 29er*2.4" |
| Weight | 2160±45g |
| SeatPost | Φ31.6mm |
| BB | BB92 |
| Fork Travel | 120mm |
| Frame Travel | 100-120mm |
| Brake Rotor | 160mm (max 180mm) |
| Thru Axle | 142*12mm or 148*12mm |


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