|Boot:||Original K2 Softboot|
|Closure:||Boa Closure System|
|Frame:||Aluminium Performance Hi-Lo|
|Wheel Setup:||100mm - 100mm - 110mm - 110mm|
|Wheels:||K2 Performance 85A|
The K2 Radical X BOA skates takes the best features of race skates, longmount frames, carbon cuffs, TwinCam ILQ-9 Pro bearings and combines them with the best fit in the world, the patented K2 Softboot™. New materials in the upper create even more support for the 110mm/100mm Hi-Lo frame that makes the K2 Radical Pro the fastest K2 inline skate on the market and the number one skate for speed junkies world-wide.