Clavicula sine exceptione — No rule without exception! Our top-line, full-carbon crank with integrated carbon axle is engineered like no other.
In development we focused on optimizing its geometrical and structural definition, based on a precise analysis of load paths.
As a result, it is extraordinarily stiff in all planes, exactly what’s required for loss-free power transmission. We are particularly proud of the patented connection between left-hand crank and axle — THM is the first to successfully productionize a carbon-to-carbon interface at the heart of the bicycle drive train.
Aligning the fibers of the external and internal splines reduces wear to near zero and eliminates noise. And, of course, it’s lighter, 293 g with spider. Clavicula SE beats all our own benchmarks and is the new reference in crank design.
TECHNICAL INFO
- Weight (±5%): About 302 g (0.67 lb) for crank system Standard and about 293 g (0.65 lb) for crank system Compact
- Mounting: Fits any frame with standard 68 mm BSA shell.
- BBright™ Direct Fit (only Cervelo frame R5ca) also available BB 386 (only AX Lightness frame ViAL EVO) also available
- Chainrings: THM-Carbones recommend Carbon-Ti chainrings (12s), not included
- Q-Factor: 148 mm
- Chainline: 43,5 mm
- Inner width of the cranks: 118 mm
- Max. permissible total weight (rider+bicycle+luggage): 110 kg (243 lb)
