Any pitch pedals that can go -4 Octaves ?

Very niche I'm sure! Currently using a Whammy Ricochet with a Casio SK1 (kids keyboard with 2.5 octave range) - it sounds great but need it to go lower. Hoping an EHX Pitch Shifter will do the trick as it does -3 octaves but wondering if any pedals can go even lower ? Thanks !