Both cams increase torque and horsepower across the board, and add significant midrange power from 2200 to 6000 rpms. Red Shift 527 cams are designed for 103″ and 110″ engines and not only deliver immediate throttle response in 6th gear, but also provide fast acceleration at low rpms. Red Shift 525 cams are designed for 96″ and 103″ Touring bikes and promise to deliver immediate throttle response and acceleration at or below 2000 rpms without detonating. Zipper’s offers two camshaft variations in the Red Shift HiTorque cam series for 96″, 103″ and 110″ engines. to discuss the project with owner Norman Gross and lead tech Matt Liptak. Installing a set of Zipper’s Red Shift Cams seemed like the next logical step, so I rode the Switchback to Sussex Hills Ltd. The horsepower and torque boost was considerable, and I was very happy with the bike’s snappy performance. Around this time last year, the Zipper’s Performance tech team at their headquarters in Elkridge, Maryland, installed the ThunderMax with AutoTune EFI controller and a Zipper’s HiFlow Air Filter Kit in my 2012 Switchback.
