THM Clavicula SE Mountain Crank

For riders seeking the ultimate balance of weight savings and strength, the THM Clavicula SE Mountain Crank sets the benchmark. Crafted from high-modulus carbon fiber, this ultralight crank delivers exceptional stiffness while maintaining an impressively low weight. Whether you’re conquering steep climbs or accelerating out of tight corners, the Clavicula SE offers unmatched efficiency and responsiveness—making it a top choice for XC and trail riders who refuse to compromise on performance.  

Technical Details:

The THM Clavicula SE Mountain Crank is a masterclass in carbon engineering. THM’s proprietary high-modulus carbon fiber construction keeps the weight at an industry-leading ~300g (including spindle) while maintaining exceptional rigidity.

Weight: ~299g (varies by length)

Material: High-modulus carbon fiber

Spindle Diameter: 30mm

Crank Arm Lengths: 170mm, 172.5mm, 175mm

Q-Factor: ~168mm

Chainring Compatibility: Single & double setups (compatible with standard 104 BCD rings or direct-mount options)

Bottom Bracket Compatibility: BSA, BB30, PF30, and other common standards with adapters

The Clavicula SE’s integrated carbon spindle reduces weight while maximizing power transfer, ensuring that every watt goes straight to the drivetrain. The precision-molded carbon structure provides exceptional torsional stiffness, making it one of the most efficient cranks in its class.

Riding Impressions:

On the trail, the Clavicula SE’s stiffness-to-weight ratio is immediately noticeable. Out-of-saddle efforts feel direct and responsive, with no perceptible flex, even under heavy load. Whether sprinting or climbing, the power transfer is instantaneous, making the crank feel almost like an extension of the rider’s legs.

When paired with lightweight chainrings, the crankset delivers a snappy acceleration that’s especially beneficial for XC racing, technical climbing, and fast-paced singletrack. The low weight also improves handling, making the bike feel more agile in switchbacks and technical descents.

However, due to its high-performance design, this crank is best suited for riders who prioritize weight savings and efficiency over extreme durability in enduro or downhill conditions. For those seeking a race-ready crank with uncompromising performance, the THM Clavicula SE is one of the most advanced options available.