Co-Motion English Threaded Eccentric


Co-Motion self-locking eccentric for 73mm frame shells. Designed and machined in-house, this is our standard eccentric used on most Co-Motion tandems and Rohloff single bikes. Fits all Co-Motion tandems with 71mm wide / 54mm diameter frame shells - excluding split frame shells with external pinch bolts. 

  • 6061 aluminum body, anodized Black
  • Eccentric BB width: 73mm
  • Outside diameter: 2 1/8" (54mm)
  • Throw adjustment: 15mm
  • Uses 4mm - Grade 8 allen bolts
  • Self-locking plates are heat-treated stainless steel