GT's Mach One Jr. is a perfect first bike for kids 5-8 years-old wanting to start BMX racing. Think of the Mach One as a stepping stone to becoming the fastest kid on the block

COLORS:

• Extras:
  Training wheels, Pad set
• Frame:
  GT BMX dirt jump styling, Hi-Ten steel
• Fork:
  GT BMX design, 1" threaded steer, 1-1/8" O.D. blades
• Crankset / Chainwheel:
  Forged one-piece type, 114mm/ '06 design GT steel, 32T.
• Bottom Bracket:
  Steel, Ball type
• Pedals:
  Jr. BMX design, resin
• Chain:
  KMC Z410
• Rims:
  Alloy, 28 hole
• Front Hub:
  Steel, 28 hole, 3/8" axle
• Rear Hub:
  Steel, 28 hole, FW
• Cog set:
  16T
• Spokes:
  14G
• Nipples:
  Brass
• Tires:
  GT Wing design, 16x2.125" (f&r)
• Front Brake:
  Alloy side-pull caliper
• Rear Brake:
  Alloy side-pull caliper
• Brake Levers:
  Alloy / Resin
• Handlebar:
  GT BMX design, Hi-Ten, 5.7" rise
• Stem:
  4-bolt alloy top, steel quill
• Headset:
  Steel, 1"
• Grips:
  GT Wing waffle design
• Saddle:
  GT Jr. BMX design, padded with 7mm rails
• Seat Post:
  Steel, 25.4mm O.D.
• Seat Clamp:
  Alloy, GT Wing logo

• GT BMX Frame in full Hi-Ten steel. 15.5" top tube
• Freewheel version w/ hand brakes
• Includes full-coverage chainguard and training wheels (not that they will be on long)