Details The Redline Romp was designed for your first trip to the trails or drop-in at the skatepark. The Romp entry-level BMX bike has a proven freestyle geometry, 25/9 gearing, and chromoly steel 3-piece cranks, allowing you to experience many BMX "firsts." The cassette hub and micro gearing also help clear ramps and jumps better because they're smaller and lighter weight.- Sizing: 4'5" – 5'7" Riders Specs Frame Hi-Ten Fork Hi-Ten, Tapered leg Rims Alloy, 36h Hubs Front: Aluminum, Chromo 3/8" AxleRear: Aluminum, Semi-sealed, Chromo 14mm axle Spokes 14g Steel Tires 20 x 2.25" Park Tires Bottom Bracket American Crankset 100% Chromo 3pc, 170mm Chainrings 25t Cassette/Freewheel 9t Chain KMC S1 Brakes Tektro 907A U-Brake Brake Levers Tektro Handlebars Hi-Ten 8.25 Rise/ 28" Wide/ 12 deg Back/ 1 deg Up Tape/Grips Monster 151 Flangeless w/Plugs Stem Top Load, 50mm Headset Threadless, 1 1/8" Seatpost 25.4 Saddle Monster Padded Combo Saddle w/ 25.4 Post Pedals 9/16" Low Profile Resin Platform