DK Sprinter Pro BMX Bike Description: The DK Sprinter Pro BMX Bike is DK's mid-level race bike for the pro class. The frame is made of 6061 series aluminum to keep it light yet durable and is designed for the brake cable to be routed through the frame for a clean look. This bike comes equipped with all sealed bearings, 2-piece cranks, and sturdy double-wall rims ready to hit the track out of the box. Specifications: Frame: 6061 Aluminum, Internal Cable Routing Fork: 100% Chromoly, Tapered Legs (1-1/8" Steerer Tube) Headset: Integrated, Sealed Bearings Stem: Alloy, Top Load (50mm Reach) Bars: 100% Chromoly (8" Rise) Grips: DK Tsuka Cranks: Forged Alloy 2-Piece (175mm Length) Bottom Bracket: External European, Sealed Bearings (24mm) Pedals: DK Blender PC Platform Chainring: 4-bolt Chainring, Alloy (44T) 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: 16T Cassette Front Rim: Alloy (Double Wall) (36H) Rear Rim: Alloy (Double Wall) (36H) Front Tire: Arisun XLR8 (20x1.95") Rear Tire: Arisun XLR8 (20x1.75") Seat: DK Pro 1-Piece Seat/Post Combo Seat Post: Combo, 27.2mm, Alloy Seat Clamp: Alloy Brake Lever: Alloy Brakes: Alloy Pro Linear V-Brake Extras: - Weight: 22.5 lbs Geometry: Toptube Length: 20.5" Chainstay Length: 14.8" Headtube Angle: 74deg Seattube Angle: 72deg Bottom Bracket Height: - Standover: - Sizing Guideline: 5'6" - 6' 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.