We recently dialed in a Harley-Davidson Road Glide with an outside M8 114” build. The initial numbers came in lower than expected, so our team recommended an exhaust upgrade. After swapping the headpipe, the bike gained 12.5% more horsepower and 10% more torque! <br />Visit Us - https://hobanbrothers.com/collections/harley-davidson-oil-change-kits
