The 4130 Chromoly frame is hand-built, double butted, tig-welded, heat treated and ready to add a derailleur and cable stops if you want to add gears * Rear hub fits a cassette, frame is ready for a derailleur, cable stops, down tube shifters, fenders, rack, any handle-bars and all types of terrain * Sealed bearing hubs for less rolling resistance than loose ball hubs, less maintenance when you ride in dirt or rain * Sealed Bottom Bracket, Alloy Crank with 42T chainring * 700C Double Wall Rims, Kenda Cyclo Cross Tires, Integrated Seat Clamp, among other high performance specs