Colony Horizon 18" BMX Bike Description: The Colony Horizon 18" bike is a great option for those riders looking for a solid bike to progress their skills with but aren't quite big enough for the standard 20" bike. Built around an all-aluminum frame with appropriately sized geometry, the Horizon 18" was designed to be lightweight, agile and most importantly, fun. Specifications: Frame: 6061-T6 Aluminum (17.9" Toptube) Fork: Hi-tensile Steel w/ Chromoly Tapered Legs Headset: Integrated (1-1/8") Stem: Colony Horizon Alloy Top Load Bars: Colony Chromoly 2-Piece (8" Rise) (25.5" Wide) Grips: Colony Horizon Cranks: Colony Chromoly 3-Piece (140mm Length) Bottom Bracket: Sealed Mid (19mm) Pedals: Plastic Sprocket: Colony Horizon (25 Tooth) Chain: KMC Front Hub: Colony Sealed Alloy (3/8" Axle) Rear Hub: Colony Sealed Alloy Cassette (3/8" Axle) Driver: 9 Tooth Front Rim: Alloy (Single Wall) (36H) Rear Rim: Alloy (Single Wall) (36H) Front Tire: Family F641 (18" x 2.3") Rear Tire: Family F641 (18" x 2.3") Seat: Colony Horizon (Railed) Seat Post: Alloy (27.2mm) Seat Clamp: Alloy Brake Lever: Alloy (Short Reach) Brakes: Alloy U-Brake w/ Clear Pads Gyro: - Gyro Tabs: Drilled (Not Included) Brake Mounts: Welded Extras: - Color: Clear Blue Weight: 20 lbs 11.5 oz Geometry: Toptube Length: 17.9" Chainstay Length: 12" Headtube Angle: 75deg Seattube Angle: 71deg Bottom Bracket Height: 10" Standover: 49 cm Recommended Sizing Guide: 3'8" - 4'10" 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.