Adjustable Heel Security System® (HSS)

 

The Adjustable HSS®, introduced in 2006, reinforces the top of the heel cup and adjusts to securely close around the heel just above the calcaneus (heel bone), eliminating power-robbing heel lift during the pedal stroke.

 Like most SIDI small parts, the Adjustable HSS® is replaceable, and also available as an aftermarket upgrade to 2007 thru 2009 SIDI models.