For 24” & 26” Wheel Fat Bikes This one-size-fits-all aluminum tubular rear rack is designed exclusively for Fat Bikes with disc brakes. The rack legs are adjustable to fit most 24” & 26” wheel Fat Bikes. The integrated side bar provides a lower pannier attachment point allowing more space for cargo on top of the rack. The MTX QuickTrack® plate is compatible with any Topeak MTX TrunkBag, MTX rear basket, and most other rack packs and panniers on the market.