The Speedplay baseplate extender provides for increased options in forward-aft cleat positioning of all Speedplay cleats. It provides an additional 2mm of forward positioning and an additional 14mm of rearward positioning.
Use it to replace the standard black plastic base plates.
This is an aftermarket accessory, not an original Speedplay / Wahoo product, which is not currently available. You can complain that it is pricey but these are machined in small batches in Europe, not mass produced in China.
Mounting screws are included.
This is a new version designed to work with the existing blue colored shims supplied with Wahoo Speedplay pedals. You will need to transfer the existing blue shims from the original base plates to these extender base plates.