THM Ulna Road Bar

* Unit price: $699.00 /
Article number: 025-02-02
Availability: In stock (1)

As a result of their complete company structure, THM is able to design, test, and produce components that are more technically advanced than many of their competitors. A small team of experts in their respective fields, members of the THM team are involved in both engineering and production. Along with building their own production tooling, their custom testing equipment is also built in-house, allowing product testing beyond all industry safety norms.

THM's complete “in-house” process from design to production to testing was employed in the creation of the newest component in the THM lineup, the Ulna carbon handlebar. While THM has kept many of the details regarding the methods and materials used for this bar under wraps, one of the innovations that makes this bar unique is its proprietary internal structure. This internal structure has allowed THM to make one of the lightest bars available while remaining as stiff as much heavier bars from the competition. At only 157 grams (42cm), these bars feature a compact profile (119mm drop and 77mm reach) and a 6 degree flare. As with all of their offerings, THM has not overlooked the small details that make a component both more elegant and better functioning. Ports on the underside of the bars allow internal Di2 wiring, with grooves that provide channeling for brake and/or shift housing to keep the bars looking clean and streamlined after being taped. Textured surfaces at the stem clamp area as well as the control clamping areas aid in holding the components firmly in place. The bar tops feature a generous flat section without being overly wide, providing a comfortable perch across a wide array of hand sizes. Dubbed as a “natural carbon” finish by THM, these black bars feature a satin finish that lies between a flat matte and a full gloss. Subtle white logos are found on either side of the clamping area. One of the lightest road bars available from one of the leading names in ultra-high-end and ultra-light-weight components, the THM Ulna should not be overlooked when looking for a lightweight bar with outstanding performance characteristics.


The THM Ulnas are not compatible with aero extensions, use of which will void the warranty. We recommend that these handlebars be installed by a professional mechanic.

THM measures their handlebar widths at the drops, the tops are 2cm narrower. EX: 40cm THM handlebars are 38cm at the tops. Keep this in mind when ordering.


  40cm 42cm 44cm
Weight ~155g ~158g ~163g
Reach 77 mm  
Drop 119 mm  
Stem Clamp Diameter 31.8 mm  
Material Carbon Fiber  
Finish Satin  
Di2 Compatible Yes (internal ports)  
Rider Weight Limit 243 lbs (110 kg)  
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