The baseplate allows pedals being mounted on the Sim-Lab seat slider, which makes it easy to quickly adjust the position of the pedals relative to the seat.
Sim Pedals Ultimate+ Baseplate • Heusinkveld
Review of HPP Pedals 2014 - Sim Racing Machines
Looking for feedback on a DIY 8020 pedal mount design : r/simracing
Forte™ Sim Racing Pedals Brake and Throttle – Abruzzi Racewear UK
Fanatec Pedal Adapter Plate For RaceRoom Frame – Raceroom UK Sim Racing Store
Universal TR-One Pedal Mounting System including Pre-Drilled Pedal Pla – Trak Racer UK
RSeat UK SimracingRS1 Pro Pedals Upgrade Kit BlackRigs and cockpits for direct drive wheels
New to sim racing, I constantly adjust my feet on the pedals, is my angle wrong on my Sprint pedals? : r/simracing