What Our Gearhead(R) Experts Are Saying:"The pneumatic arms snap open with one tap and lock onto the tire without touching the frame, so loading a heavy e-bike takes seconds instead of a wrestling match. The all-metal build and FastFit chock system handle everything from skinny road wheels to fat tires without any adapters."The Piston Pro skips the Kashima-coated struts and integrated LED taillights of the Pro X, but everything structural is identical. The OneTap pneumatic arm system, all-metal construction, FlatLock hitch cam, and e-bike capacity are all carried over. For riders who don't need the lighting or the coating, the Piston Pro delivers the same loading experience and the same per-tray capacity at a lower entry point.