Cạc bọn nó có dăm bẩy loại cụ ợ:
(trích Q&A của Trek)
Road Carbon
Each of our OCLV carbons are designed to give riders the right balances of performance and value.
700 Series OCLV: The lightest, strongest carbon in the cycling world, built from military grade materials available only in NATO countries. 700 Series OCLV is the ultimate combination of superior modulus and superior strength, and it's only from Trek.
600 Series OCLV: Advanced aerospace materials and weight-saving, performance-enhancing processes like Step Joint technology provide the best frame weight/stiffness combinations in the industry.
500 Series OCLV: The best mix of materials available outside of North America. Light, strong, stiff, and perfectly suited to the sophisticated frame technologies that distinguish Trek frames.
400 Series OCLV: Ultra high performance, within reach. The areal weight range and modulus mix of 400 Series OCLV provides an exhilarating sense of acceleration and confident handling.
300 Series OCLV: A better carbon at an amazing price. 300 Series OCLV is a smooth, intermediate-modulus material that proves that great performance and affordability don't have to be mutually exclusive.