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Killington / Socket Drive

Our Socket Drive interface system has been in use on our Flatware cranks since their inception, and it was only a matter of time before the system was adapted into our Thunderbolt cranks. The time has come.

In a nutshell, the Socket Drive™ system is a 9 sided interface which eliminates the need for a sprocket bolt. The sprocket itself is machined so there is no need for a sprocket insert of any kind. The two work great together. The interface is solid and reliable, so we are now offer the Killington sprocket to match.


  • 25t or 28t
  • 7075 aluminum
  • Black only
  • Socket Drive™ sprocket interface

Socket Drive™

Our sprocket evolution continues. The supplied adapter allows these otherwise Socket Drive™ sprockets to double as 19mm Spline Drive as well. We have seen a demand for our sprockets to work as Spline Drive, and this solution cleverly covers all the bases.

Socket Drive™ is a royalty-free interface. Please download the spec sheet for dimensions and tolerancing specifications here to produce your own Socket Drive™ sprockets.