Though Campagnolo recently added disc brakes to its product line, it hasn’t stopped work on its rim brake products. The Italian company is updating its Bora wheels with enhancements claimed to improve rim brake performance in both wet and dry conditions.

Called All Conditions Carbon Control (AC3), the improvements are characterized by the textured brake track we spotted at the 2016 Tour de France. Similar to Zipp’s Showstopper braking surface, the grooves not only increase friction, but are also claimed to help water and debris evacuate from the braking surface.

More changes were made below the surface including a new, more heat resistant resin, and “some internal optimisation to orient the fibres in a way to guarantee maximum integrity in the face of new input deriving from a new braking surface,” according to the press release.

The claimed benefit of the updates are a 43 per cent improvement in wet braking performance, and a three per cent improvement in dry-braking performance compared to the Bora without AC3. Additionally, Campagnolo’s materials claim the Bora AC3 wheels outperform competitors products in both wet and dry braking.

According to Campagnolo representatives, AC3 will be a running change to most of the company’s high-end carbon rim brake wheels (tubular and clincher versions of the Bora 35, Bora 50, and Bora Ultra TT), supplanting the existing smooth-brake-track Bora wheels. At this time, the 80-millimeter deep Bora 80 does not get the AC3 update. 

Campagnolo are believed to be shipping the wheels internationally from mid-July onwards.