Redline MX Junior Y-20 BMX Bike Description: The Redline MX Junior is the perfect entry-level BMX race bike for the beginning youth racer who is 4'6" to 5'1" tall. Made with an aluminum frame and integrated head tube, the Redline MX Junior is lightweight and easy to maneuver. The MX Junior features high-quality 155mm 3-piece aluminum cranks, integrated headset, 20 inch wheels, and an integrated saddle and seat post combination for weight savings. Specifications: Frame: 6061-T6 Allloy with Integrated Headtube Fork: Redline Hi-Ten with Tapered Legs Headset: 1" Integrated Stem: Redline Hollowpoint Aluminum 1-1/8" Threadless Bars: Redline Race Aluminum 4.5" 10deg Back 2deg Up Grips: Redline Hex Expert Grips with Plugs Cranks: Redline Aluminum 3 Piece 155mm Bottom Bracket: Euro Square Taper JIS Pedals: Redline Race 9/16" PC Pedal Chainring: 38T, Alloy Chain: KMC Z410 Front Hub: Redline Aluminum Rear Hub: Redline Aluminum Flip Flop Cog: 14T Front Rim: Race Alloy (20 x 1-1/8") Rear Rim: Race Alloy (20 x 1-1/8") Front Tire: Vee Speedster (20 x 1-3/8") Rear Tire: Vee Speedster (20 x 1-3/8") Seat: Redline Race Integrated Seat Post: 22.2mm Post Seat Clamp: Bolt-on Brake Lever: Tektro Brakes: Tektro 926AL Linear Extras: Color: Black Weight: TBA Geometry: Toptube Length: 18.5" Chainstay Length: 13.5" Headtube Angle: 73deg Seattube Angle: 69deg Bottom Bracket Height: 10.8" Standover: TBA Recommended Sizing Guide: 4'6" to 5'1" For assistance building your new bike, please check out our tech help section here for instructions and tips on how to build your bike to ensure it is safe. A new race bike calls for a matching helmet to complete the look. Browse our selection of full face race helmets here. Need help finding the right bike for you? Not sure what size would suit you best? Check out our BMX buyers guide video below! Note: To ensure that every component on your bicycle is working pr...