The FH-M8130-B is a rear FREEHUB for a disc break from Shimano’s Shimano’s Deore XT range. It is easy to install with the spline mount & lock ring. The FH-M8130-B has a 12 mm E-THRU axel. In addition, the FH-M8130-B has an extra wide O.L.D spec of 157mm. Lastly the FH-M8130-B increase acceleration increasing riding excitement, enjoyment & performance & is available in 28H, 32H.