These aluminium tracks enable plastic keepers brand footrest rails to slide backwards and forwards enabling left/ right rudder control. This enables you to use the ball or full foot (not just the toes).
Additionally they provide excellent bracing for both legs as well as ease of leg length adjustment.
These tracks are a replacement part and are included in rudder kits so best used for a custom install where you already have the keepers footrests and don’t need the rest of the kit or to replace a damaged item.
Hole spacing is the same as the keepers footrests (so you don’t need to drill holes if adding a rudder to a kayak with existing footrests).
Holes in the tracks are threaded so require the use of the correct screws.
Rudder Kits branded Wilderness Systems, Dagger, Perception and Harmony already include (and use these tracks)