2020 Haro Annex Si 20" BMX Bike

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With its 19.5" top tube alloy frame, the Haro  Annex Si is a great starting point for riders who are considering hitting the local BMX track for the first time but also want a bike that can handle every day riding. The 165mm cranks and 40/16 gearing make pedaling a breeze whether on the track or on the way to school and the stylish BMX race inspired graphics are sure to catch attention.


  • 6061 alloy frame with 3D dropouts with integrated chain tensioners, 19.5" top tube.
  • Full hi-ten fork with 1 1/8" threadless steer tube.
  • Hi-ten 7.5" bar and Haro alloy front load stem.
  • 1 piece 165mm crank with USA loose ball BB.
  • 40/16T gearing.
  • Haro padded fully adjustable seat.
  • Kenda Kontact 20x1.95" front and 1.75" rear tyres.
  • Promax V-Brake and lever.


  • Top Tube: 19.5".
  • Headtube Angle: 74 degrees.
  • Seat Tube Angle: 70 degrees.
  • Chainstay Length: 13.5".
  • Bottom Bracket Height: 11.5".
  • Standover: 21.5".


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