MAXXIS Re-Fuse CycloCross/Adventure Our most popular training tyre and most stable road tyre has been designed for new areas of use with tubeless-ready technology and greater volume. Even more reliability and comfort as well as the matching tyre sizes make the Re-Fuse the first choice for gravel bikes and touring MTBs. Its diamond tread keeps rolling safely, even if the road turns into a dirt or gravel path.