The fluid lets you choose your perfect trail weapon the 650b fluid 7 or for younger riders the 20 fluid 2 24 fluid 4 or the 26 fluid 6 like every bike in the norco lineup the fluids were designed around their intended uses and respective wheel sizes no geometry compromises here with 120mm of trail tuned art suspension and short stiff rear ends the fluids snap around corners explode up tech climbs and flow through rocky rooty descents this truly is a bike for those lookin