The FastBack 70LS to Double Century Upgrade Kit lets you double the carrying capacity of your 70LS Pack system. The kit comes with a pack complimentary to the FastBack 70LS Hydration Pack and materials needed to complete the upgrade. With this upgrade, you can stow two CamelBak 3L Bladders for up to six liters of liquid or gear. Make the upgrade today and ride faster and ride farther!

This item includes ONE pack that works in conjunction with your existing FastBack 70LS, buckling together to conquer the Ride.