Shimano Lark II (LK10)

Shimano Lark II derailleur (LK10) main image

With the closing of the 1970s the venerable Lark design took a small, but significant steps forward. The cable clamp was mounted on the outer parallelogram plate - changing the geometry of the gear, as previously the cable clamp was attached to the front knuckle. The spring-loaded cable saver was also moved from the cable clamp bolt and built into the outer cable stop. All this clearly deserved a change of name - to Lark II.

This example has a Japanese-style backwards hanger plate.

  • Derailleur brands: Shimano
  • Categories: Shimano - from Skylark to world domination
  • Country: Japan
  • Date of introduction: 1977?
  • Date of this example: 1982 (two letter date code is GH, stamped onto inner parallelogram plate)
  • Model no.: LK10
  • Weight: 299g including hanger plate
  • Maximum cog: 28 teeth
  • Total capacity: 28 teeth
  • Pulley centre to centre: 54mm
  • Index compatibility: friction
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: sprung
  • P pivot: sprung
  • Materials: steel
Shimano Lark II derailleur (LK10) additional image 01

Browse associated documents.

Shimano Bicycle System Components (1978)

Shimano Bicycle System Components (1978)

  • Publisher: Shimano
  • Date: May 1978
  • Derailleur brands: Shimano
  • Derailleurs: too numerous to mention - see individual pages
Shimano Bicycle System Components (1978) front cover thumbnail