Hollywood HR1700 RV Rider Fat/E-Bike 2 Bike 2 Bike 2` Black 160lbsCapacity: Two Bikes (Max. 80 lbs per bike) Hitch Size: 2 only (Do not use a 1 ? 2 hitch adapter) Maximum bike wheelbase: 60 Maximum tire width: 5" Features extra heavy duty wheel holders, an internally reinforced frame and external brace for heavy load carrying capacity Includes keyed alike locking hitch pin, 8 security cable and locking frame grabbers For 20" Fat tire rear wheels you will need a Small Wheel Adapter (SW ADP U) to prevent derailleur