For 24”-29” & 700C Wheels w/ Disc Brakes This one-size-fits-all aluminum tubular rear rack is equipped with adjustable legs to fit most 24” to 29” wheel MTB and 700C touring bikes with disc brakes. This tough tubular rack is perfect for touring, commuting, or running errands in town. The MTX QuickTrack® plate is compatible with any Topeak MTX TrunkBag, MTX rear basket, and most other rack packs and panniers on the market.