In addition to the STEVENS XC carbon racing bikes, our hardtail aluminium mountain bikes have been the basis for the success of the STEVENS bicycle brand for over 30 years now. Since the beginning, our bikes have been repeatedly praised and awarded by the specialist media, our retailers, but also customers for our bikes’ excellent price-performance ratio. Read more …And these successful characteristics you can also find in all of our XC aluminium hardtail models which are made to be super stiff yet extremely light. From the Colorado 401 at the top of the aluminium MTB range to the particularly affordable Tonga entry-level model, you are sure to get durability, excellent handling and lots of riding pleasure included with every bike. The XC Alloy series models are offered with different wheel sizes depending on the frame size. Frames from size 18" roll on 29” wheels. Frames size 16” and smaller roll on 27.5” wheels.