The Terra Gravel 105 FSA is the original ORRO gravel bike, with rugged simplicity and dependability at its heart. Our OSD triple-butted 6061 aircraft grade aluminum frame is equally adept at adventures as it is commutes. Designed with venturesome riders in mind; those who may want to take the shortcut along the towpath; hammer the bridleways instead of the tarmac. Unlike the very first versions of the Terra Gravel, the latest iteration now comes with 35mm tyre clearance (32mm with guards) which allows for ultimate control, comfort and grip.