From what I'm seeing in my parts manual the passenger pegs only have one pin.
From 06 Firebolt Catalog
C0235.02A8 PIN, footpeg
N0425.02A8 CLIP, footpeg
N0427.02A8A DETENT PLATE, passenger
N0428.02A8 SPRING, passenger
N0429.02A8 BALL, passenger
N0553.02A8 Footpeg (right)
N0552.02A8 Footpeg (left)