3. For this install, a Bassani 2-into-1 Road Rage Exhaust system for Rocker models was used. This bike was also fitted with an AIM Corp Variable Pressure Clutch assembly (Starting at $245) because it is a simple bolt-in piece that increases the clamping force as the rpm increases. This part offers easy clutch pull, fits under the stock derby cover and allows the use of all stock components. A Zipper's Thundermax EFI unit with AutoTune ($899.95) was also used for this install and a two-bar map sensor ($175) was added.