Both bikes use a Rotrex C30-94 supercharger. If you're impressed, you'd be happy to know TTS Performance sells dedicated supercharger kits for both Harley-Davidson Softail and Touring bikes.

The kit includes a C30-94 Rotrex supercharger, a new oil reservoir, BBR's own oil cooler, front mounted intercooler, ‘Starchip EcuTek’ ECU tune and a K&N induction kit. A stage two upgrade ...