THM Korea | Handmade German Carbon Components

Lightness is not the goal.
It is the result
of getting the design right.

THM is a carbon component company founded in 1996 by Thomas Mertin and Petra Mertin in Alt Duvenstedt, a small village in Schleswig-Holstein, northern Germany. An aerospace engineer by profession, Thomas saw an opportunity in the fact that high-grade carbon technology from aviation was barely used in sport and leisure.

The breakthrough in cycling came with what were then the world's lightest crankset and fork. Raced and proven by the Deutsche Telekom pro team, these parts were named THM-Carbones. To this day THM does everything itself, from design and tooling to testing and production, in its own factory in Alt Duvenstedt.

Clavicula sine exceptione.
No rule without exception.

SE stands for the Latin sine exceptione, without exception. The Clavicula SE is THM's top-line crank, its geometry and layup redefined on a precise analysis of load paths. Extraordinarily stiff in every plane, it transmits your power without loss, and weighs 293g with spider.

THM is particularly proud of the patented connection between the left crank and the axle. It is the first to successfully put a carbon-to-carbon interface into production at the heart of the drivetrain. Aligning the fibres of the external and internal splines reduces wear to almost nothing and eliminates noise.

For more than a decade,
the lightest brake.

For more than a decade, THM's Fibula rim brake has matched the performance of the top models from major brands at half their weight. Today's Fibula is redesigned for the era of wide rims, and gets its performance by fully exploiting the properties of carbon fibre.

The new Fibula is made by resin transfer moulding (RTM) for better tolerancing, consistency and strength-to-weight, and even the return spring is composite. At 120g for the pair, it is still the lightest brakeset available.

The shortest path
between hands and front wheel.

THM's cockpit starts with the Tibia stem and the Ulna handlebar. In both, fibres are chosen and laid to minimise stress differences, as nature does, making them extremely stiff yet smooth over road buzz.

The Frontale merges the two into one integrated cockpit, and the Frontale Aero adds a slim NACA profile. All are ready for fully internal cable routing (ICR).

A very light,
very comfortable seatpost.

The goal was simple, achieving it was hard. After two years of development THM released the Mandibula. Comfort seatposts share one problem: the farther they stick out of the frame, the more they flex. Taller and heavier riders end up on a softer post.

The Mandibula divides the post into two zones. The power zone is a stiff, light structure that hardly flexes however much is exposed, and the comfort zone gives exactly the right amount of comfort without becoming too much. Thanks to THM's layup, the saddle stays level through the flex.

The right THM for your bike

For cranks, check your frame's bottom bracket standard and chainring interface first; for bars, check width, drop and reach. Figures are based on THM's official technical information, with weights within ±5%.

From an aerospace engineer's workshop
to the benchmark for the lightest parts.

From 1996, when an engineer in northern Germany began making cranks and forks from carbon, to today and the direct mount Clavicula. For 30 years THM has stayed true to a small team that designs and builds everything itself.