If you have a RockyMounts MonoRail, you know it holds up to two bikes securely. If you have a third person coming along for the ride, you can change your MonoRail into a three bike rack with the MonoRail One Bike Add-On. It has the ability to be adjusted 3" side-to-side in order to optimize the bike offsets. The original MonoRail is able to hold up to 120 pounds total, which translates to 60 pounds per bike. If you add the One Bike Add-On, that means you can carry 40 pounds per bike. Make sure you always load the heaviest bike closest to the vehicle. The MonoRail can hold wheel sizes from 20" to 29" and up to 5" wide tires. Bring another friend along with the MonoRail One Bike Add-On.
Increases carrying capacity from 2 bikes to 3 bikes
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