Details The Slammer has the aspiring Olympic skatepark rider in mind. The frame's geometry is quick and responsive, allowing the bike to handle easier as the young rider builds up their strength. Items like a cable detangler, sealed mechanism 14mm axle, 9T cassette hub, and adjustable railed saddle are the little details that will allow this future champion to practice with confidence! Specs Frame Hi-Ten Steel Tubes, DT Gusset, American BB, Seat Stay U-Brake, 1-1/8" H/T, w/ Removable Rotor Tabs Fork GT FS Design, Hi-Ten 2pc. Steerer & Tapered Legs, 31mm OffSet, 3/8" Axle Dropouts Headset 1-1/8" Threadless, Steel Rims/Wheels Alloy Single Wall, 36h Spokes Stainless Steel, 14g Crankset GT Power Series Cr-Mo 3pc., 170mm Arms, 19mm x 8T Cr-Mo Spindle, GT 25T Steel Chainwheel Chainrings 25T Bottom Bracket American Loose Ball Bearing Chain KMC Z410 Freewheel 9T 1pc. Driver Handlebars GT Freestyle 2pc., Steel, 8.375"H x 28"W, 3° Up, 11° Back Tape/Grips GT Super Soft Flanged 155mm Single Compound w/ GT Removable Plug Stem GT Top Load, 1-1/8", Cold Forged Cap, 32mm Rise, 40mm Brakes Aluminum U-Brake w/ Soft Compound Pad Pedals GT Low Profile FS Platform Design Saddle Railed Seat Post Alloy, 25.4mm x 200mm