An aggressive yet well rounded downhill and gravity tire with well spaced, partially hollow and siped tall knobs for extreme grip RSR - Building on the impressive original, the new RSR compound is a dual layer tread rubber, with the soft RSR compound on top and the stiff SRC on bottom AEC - Using the same 3-piece Aramid inserts as the AGC casing, AEC omits the apex at the bead: for the same high level of puncture and cut resistance but without the added weight Tubeless 29x2.4 622 TBLS - Fold Bk/Blk 50 60 RSR/AEC NoUPC/EAN/GTIN: 047853644050