The Bali X2 features a dual suspension, aluminum alloy frame, with 21 speeds. The Bali X2 is similar to the Bali, but there are a few upgrades including: a 50% bigger front suspension, stronger rear suspension, front disc brake, kill switch on throttle grip, and improved torque. The Bali X2 is rated to go 40 miles at 20 mph in electric assist mode.