Sealed Bearings, Front 2 bearings, Rear 4 bearings. Suitable for cassette speeds: 8/9/10.Can fit Shimano 11 speeds. You can convert it easily with this adapter to. The item "KOOZER XM490 Hubs MTB Mountain Bike disc brake Hub 32H 4 Bearing Front Rear set" is in sale since Thursday, August 24, 2017. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Hubs". The seller is "hugebegin-top912" and is located in . This item can be shipped worldwide.