VoiceVelo Chorus XC Frame – Full-Suspension XC Platform
The VoiceVelo Chorus is a full-suspension carbon frame for XCO, XCM and down-country builds, designed around modern XC geometry, 110–130 mm fork travel and 110–120 mm rear travel.
At THE BIKE LAB, we see the Chorus as a flexible base for a lightweight custom XC build, with modern geometry and broad component compatibility.
1. Space-Age Composite: NGF XN-60 Graphite Fiber
This is not a standard, repetitive carbon layup. In key areas of the VoiceVelo frame, advanced NGF XN-60 graphite fiber has been used, with a tensile modulus that is 2.1 times greater than that of the iconic T1000 carbon. Combining it with the proven T800 structure allowed for bottom bracket stiffness of 129.79 N/mm. The high-stiffness carbon layup is intended to provide a direct pedalling feel, especially when the rear shock is locked out.
2. "Long and Slack" Geometry Adapted for Pan-XC
Forget the nervous handling of classic mountain bikes. The Chorus introduces progressive downhill geometry while maintaining brilliant climbing characteristics:
- Slack Head Tube Angle (67°): Designed to add stability on steep and technical sections.
- Steep Effective Seat Tube Angle (78.3° in size M): Moves the rider forward over the bottom bracket for a modern climbing position.
- Compact and Agile Rear (Chainstay 428 mm): Keeps the rear centre compact for responsive handling.
- Increased Reach (445 mm in size M): Provides the longer reach typical of current XC geometry.
3. Pro-Level Suspension Kinematics (Anti-Squat 105-115%)
The suspension curve has been precisely calculated using specialized engineering software, dividing the rear's action into three key phases:
- Sensitive Initial Travel (Leverage Ratio ~2.4): Provides a relatively high initial leverage ratio for small-bump sensitivity.
- Stable Mid-Travel: The Anti-Squat value is kept stable within the 105–115% range, intended to support pedalling efficiency through the middle of the travel.
- Progressive End-Travel (Ratio drops to 1.8): The falling leverage ratio adds progression toward the end of the travel.
4. ISE (Impact Strength Enhanced) Construction and Premium Standards
Thanks to the ISE (Impact Strength Enhanced) principle, engineers optimized the diameters of the composite tubes, slightly thickening the walls in areas exposed to the greatest stresses (downtube, rear triangle tubes). The ISE concept is intended to reinforce impact-prone areas while controlling frame weight. The frame weighs only 1495 g (size M, version without damper and metal hardware).
Technical Frame Specification:
| Parameter | Specification |
|---|---|
| Intended Use | XCO / XCM / Down Country / Cross Country |
| Frame Weight | 1495 g (Size M, V-PEAKS edition, without damper and axle) |
| Frame Material | NGF XN-60 Graphite Fiber + T800 Structure Carbon Composite |
| Recommended Fork Travel | 110 mm - 130 mm |
| Recommended Rear Travel | 110 mm - 120 mm (Damper 185x50 / 185x55 Trunnion) |
| Bottom Bracket | Threaded T47 |
| Max Tire Clearance | 29" x 2.6" (full mud clearance) |
| Rear Axle Standard | Thru-Axle 12 x 148 mm Boost / UDH Hanger (Universal Derailleur Hanger) |
| Brake Mount | Flat Mount (clean, integrated caliper mounting) |
| Integration and Extras | Full internal cable routing, dropper post compatibility, 3 bottle cage mounting points |
Build Your Racing Masterpiece at THE BIKE LAB
By choosing the VoiceVelo Chorus in our store, you don't just get a raw frame in a box. We offer full component consultation, selection of optimal suspension (Öhlins / Fox / RockShox), Duke/Carbon wheels, and professional mechanical assembly based on Bike Fitting process guidelines. Contact us to personalize this project for your racing goals.