FR 4D 273mm 90 165 Flat Inline Frames

FR 4D 273mm 90 165 Flat Inline Frames. The FR 4D 273mm frames are ideal for those who want a strong freeride 4-wheel frame with 90mm wheels. The FR 4D Flat frames are compatible with almost all FR, Micro, Flying Eagle, and Seba inline skate boots, as well as many Rollerblade inline skate boots (including the Rollerblade Twister models).

The frames have a flat setup (all four wheels touch the ground simultaneously).