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“In the history of stems, the Challenger stem is pretty much the greatest top load stem ever… till now. It’s not a brick, it’s cut out a bit and strong enough to stand up to what chu got.”-BF

  • 6061-T6 Aluminum
  • Grade 8 Allen head hardware
  • American Made


  • Rise
  • Reach
  • Weight
  • 28.66mm (upright), 2.84mm (inverted)
  • 51mm or 48mm
  • 11.4 oz (51mm), 11.1 oz (48mm)