Front Air Ride for MC Baggers bolt on 49mm front end kits.AirFX Front Air Ride Kits make it easy to up-grade your MC Baggers triple tree kit. These replacement style cartridges are a perfect fit. Each cartridge has 2 chambers for lift, and 1 for rebound in axial alignment. This increases piston surface area, thus reducing air pressure required to lift. A booster spring is used to dampen compression during hard braking. Resulting in a much smoother and consistent ride with increased handling performance. Each kit is specifically designed to fit your bike without modification and exceeds all manufacture specifications.