The Mongoose Title Junior is a 20" aluminum BMX race bike for young racers 4'6" to 5'1", built to go from the pump track to race gate drops. BMX race geometry with an 18.5" top tube. Features Lightweight Tectonic T1 6061 aluminum frame with internal cable routing Samox 3-piece cranks with a 38T chainring for efficient power transfer Xposure double-wall aluminum rims (14 mm ID, 28H) on sealed-bearing hubs Aluminum linear-pull brakes and levers Hi-ten steel fork and Mongoose 4" rise aluminum handlebar Specifications Frame: Tectonic T1, 6061 aluminum, BMX race geometry, 18.5" top tube, 1" head tube Fork: Hi-ten steel Crank: Samox 3-piece, 38T chainring Bottom bracket: Euro cartridge bearing, square taper, 68 mm threaded shell Wheels: Xposure aluminum double-wall rims, 14 mm ID, 28H; sealed-bearing aluminum hubs, 3/8" axles; 14G black steel spokes Tires: Mongoose 20" x 1-1/8", wire bead Brakes: Aluminum linear pull, aluminum levers Cockpit: Mongoose aluminum handlebar, 24" wide, 4" rise; Mongoose aluminum threadless front-load stem, 30 mm; 125 mm grips Headset: 1" threadless external, retainer bearing Seat: Mongoose Unifier Mini saddle; steel 22.2 mm seat post; quick-release seat clamp Chain / pedals: KMC S1 chain; Mongoose nylon pedals