Custom Bicycle Stems

  • Currently: We are not taking stem or bar orders.

Stem and bar are still order with frame order customer.

Threadless

$400 + S&H

Threadless Bicycle Stem
  • Extension angle is 73 degrees
  • Custom extension angles: $50 upcharge
  • Lengths - 80,90,100,110,120,130 and 140mm
  • Ahead System 1"or 1-1/8"
  • 4130 Cr.Mo. Heat treated tubing
  • Aero Tube Extension
  • Side Steerer Clamp system
  • Fillet Brazed Finish
  • Removable Bar Clamp
  • Weight: 205 gr.
  • Solid stock colors (Black, White, Red, Green, Blue, Orange, Yellow, etc) Other exotic paints such as pearl/candy paints and custom fades are an additional cost depending on complexity of paint job


Quill

$400 + S/H

Threadless Bicycle Stem
  • Extension angle is 73 degrees
  • Custom rise angles: $50 upcharge
  • Lengths - 80,90,100,110,120,130 and 140mm
  • Quill System 1"
  • 4130 Cr.Mo. Heat treated tubing
  • Aero Tube Extension
  • Fillet Brazed Finish
  • Weight: 225 gr.
  • Solid stock colors (Black, White, Red, Green, Blue, Orange, Yellow, etc) Other exotic paints such as pearl/candy paints and custom fades are an additional cost depending on complexity of paint job


Track Stem Quill

$400 + S/H

  • Extension angle is 58 or 65 degrees
  • Custom rise angles: $50 upcharge
  • Lengths - 80,90,100,110,120,130 and 140mm
  • Quill System 1"
  • Dual bar clamp bolts
  • 4130 Cr.Mo. Heat treated tubing
  • 1" Round Tube Extension
  • Fillet Brazed Finish
  • Weight: 280 gr.
  • Solid stock colors (Black, White, Red, Green, Blue, Orange, Yellow, etc) Other exotic paints such as pearl/candy paints and custom fades are an additional cost depending on complexity of paint job


Yamaguchi Aero stems were used by the 1992 U.S. Olympic Team - Erin Hartwell rode a Yamaguchi Kilo bike with a Yamaguchi aero stem to clock 1:04:753 for an Olympic Bronze Medal.

U.S. National Time Trial, Team Pursuit, Point Race, and Road Race riders used Yamaguchi aero stems.

All stems are Hand Made by Koichi Yamaguchi.

Yamaguchi Bicycles, Inc.

  • P.O. Box 25 Rifle, CO 81650.

Email: mailto:yamaguchibike@gmail.com