What is OEM?Tire manufacturers not only sell tires to consumers, but also cooperate with companies that demand tires (such as the manufacturer of TREK).alOs fabricantes de pneus nao apenas vendem pheus aos consumidores, mas também cooperam com empresas que demandam pneus (como ofabricante do TREK).For consumer-oriented tires, we call it the consumer version. It has a beautiful packaging. Para pneus voltados para o consumidor, chamamos de versäo do consumidor. Tem uma embalagem linda.For tires for commercial cooperation, we call it the OEM version. It is requested by the demander for customization (for example, these tires are required for the models that TREK is producing), but in most cases, due to the high cost of manufacturing molds for tires, custom requirements are generally not proposed, but existing models are required to be supplied In order to distinguish that they are not retail versions, the color of the font is changed.Para pneus para cooperaçäo comercial, nós o chamamos de versao OEM. É solicitado pelo demandante para customizaçao (por exemplo, esses pneus sao necessários para os modelos que a TREK está produzindo), mas na maioria dos casos, devido ao alto custo de fabricaçao de moldes para pneus, requisitos customizados geralmente nao sao propostos, mas existentes os modelos devem ser fornecidos. Para distinguir que nao sao versoes de varejo, a cor da fonte é alterada.Weight:ULTRA SPORT Ⅲ 23C:250gULTRA SPORT Ⅲ 25C:280gULTRA SPORT Ⅲ 28C:310gGRAND SPORT RACE 23C:260gGRAND SPORT RACE 25C:275gGRAND SPORT RACE 28C:340gGRAND SPORT EXTRA 23C:290gGRAND SPORT EXTRA 25C:315gThis weight is for reference only, and there is an error of 5 ~ 10gAll our tires are genuine, please feel free to buy

Race performance in tours and competitionsThis all-rounder is ready for every challenge, even the biggest ones.Proven racing tire contour for responsive handling and secure gripThe advanced new compoundBased on activated silica compounds, this technology was originally intended as an performance level compound, but after intensive development at our Korbach Research and Development Department Facility, an advanced new compound with outstanding grip and cross-country properties was developed. This new rubber mix, given the self explanatory name “PureGrip”, is ranked just behind our BlackChili Compound and is being used in our performance products both in the road and mountain bike sectors. Whilst providing great grip, it is also long lasting and highly durable – both characteristics of Continental tires, which are exclusively manufactured in the factory in Hefei (Asia).Original Product Continental Grand Sport Race 700c Tire Features NyTech Breaker technology for the best puncture protectionSize: 700x25c 700x23cBike type: RoadBead type: FoldingTire type: Clincher Packing: 1 tire