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THM Carbones Clavicula SE Road Crank Arms

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, 293g with spider. Clavicula SE beats all our own benchmarks and is the new reference in crank design.

Mounting
Fits any frame with standard 68 mm BSA shell. Bottom brackets available for BSA, ITA, BB30, PF30, BB86 (Shimano Pressfit), BB386EVO and BBright™ (Press Fit & Direct Fit)

Specifications
Chainrings: Not included
Q-Factor: 148mm
Chainline: 43.5mm
Inner width of the cranks: 118mm (3mm minimum clearance)
Axle Diameter: 30mm
Length: 170, 172.5 or 175mm

Max Weight Limit (Rider + Luggage)
120kg

Mfr Claimed Weight
293g (170mm)