DK Sprinter Junior BMX Bike Description: The DK Sprinter Junior BMX bike is a great mid-tier bike with quality components surrounding a 6061 aluminum frame to keep it light and responsive. The frame has internal cable routing for a clean look. This bike is equipped with all sealed bearings and double wall rims at a great price point. Specifications: Frame: 6061 Aluminum, Internal Cable Routing Fork: 100% Chromoly, Tapered Legs Headset: Integrated, Sealed Bearings Stem: Alloy, Front Load (30mm Reach) Bars: Alloy (5.2" Rise) Grips: Duo Brand Mini Cranks: Forged Alloy 3-Piece (155mm Length) Bottom Bracket: European, Sealed Bearings Pedals: Junior Alloy Platform Chainring: 5-bolt Chainring, Alloy (37T) Chain: KMC Z-610 3/32" Front Hub: DK Alloy, Fully Sealed (3/8" Chromoly Axle) Rear Hub: DK Alloy, Fully Sealed (3/8" Chromoly Axle) Cog: 14T Freewheel Front Rim: Alloy (Double Wall) (36H) Rear Rim: Alloy (Double Wall) (36H) Front Tire: Arisun XLR8 (20" x 1-3/8") Rear Tire: Arisun XLR8 (20" x 1-3/8") Seat: DK Mini 1-Piece Seat/Post Combo Seat Post: Combo, 22.2mm, Alloy Seat Clamp: Alloy Brake Lever: Alloy Brakes: Alloy Junior Linear V-Brake Extras: - Weight: 17.1 lbs Geometry: Toptube Length: 18.25" Chainstay Length: 13" Headtube Angle: 73deg Seattube Angle: 70deg Bottom Bracket Height: - Standover: - Sizing Guideline: 4'5" - 4'11" Note: To ensure that every component on your bicycle is working properly, we recommend that all bikes be assembled by a qualified mechanic. Improper assembly of your bicycle may lead to premature wear or failure of individual components such as headsets, crank assembly and wheels. Failure to do so may void the manufacturer warranty.