EquipmentBicycle Equipment : How to Choose a Rear Derailleur on Mount… admin2 months ago2 months ago01 mins In order to choose the correct derailleur for a mountain bike or road bike, it’s important to choose a cage length based on the gear range. Find out why a medium … source Post navigation Previous: WCAX SkyWatch3 Camera: Church St., Burlington, VTNext: Mountain Biking in Boston, MA Blue Hills with Lisa and Black…