Incite a cycling reaction with help from Cannondale's Catalyst 4. A strong, lightweight butted aluminum frame creates precise handling and a nimble ride that eats up trails and bike lanes equally well. 27.5-inch aluminum Alex rims roll quickly and smoothly atop Innova tires. The Shimano drivetrain provides 21 smooth-shifting speeds to conquer flats and hills, and Jak-7 mechanical disc brakes bring things to a stop right when you need them. Sturdy-yet-lightweight handlebars, stem, and saddle from Cannondale are everyday reliable for your jump-start into cycling.