After two years of continuous experimentation on lighter carbon fiber materials and the research and development of resins by the yuan an bike team, a set of optimal material ratios was finally reached. Lighter and stronger wheels are always our pursuit. Different rim shapes determine the aerodynamic performance of the wheels. More importantly, the competition wheels are focused on the most basic things. Power transmission and low loss performance depend on the rigidity and lightweight of the rim. Of course, hubs and spokes are also crucial factors.

UNC is Ultralight Non-Coated,which means the rims are original natural carbon surface ,without any coatings/painting . First of all,regular rims from the mold,need a lot of processing links:grinding,drilling,painting,labeling,to the final shipment.Of course,during this process,each rim needs to go through with a number of links of quality testing including the flatness testing,roundness testing,weight testing,as well as tire pressure testing and so on.

Two new mountain rims are launched, the rim height is 28mm, the outer width of the rim is 36mm, and the inner width is 30mm. There are two versions of cross country and all mountain, with different weights and different strengths.