Nirve Skulls Men's 3-Speed Cruiser Bike Men's 3-speed cruiser bike with proprietary 18-inch carbon-steel Galaxie frame Smooth-rolling 24-inch wheels with FatAss tires; double-crown fork Skulls saddle and Kandy Bar dirt-bike-style handlebars for all-day comfort Front disc brake, rear coaster brake, and welded steel cartridge kickstand 1.12-inch head tube and threadless Nirve stem; 5-year frame warranty