You may be in luck Charlie! They do have some for almost every current Mazda model, though the cx50 isn't listed in the drop down it does say to you can select "other model" & sibce basically all the Mazdas being produced now are very much alike the link below is worth looking into. *And yes multiple people from this forum and the cx-30 have bought from that site it is legit it takes a few weeks to get the items.

Mazda Skyactiv Proximity Collision Sensor
Additional safety features for your car With Sound alert and LED distance indicator Plug and play only in OBD2 port for old models For Mazda 3 BP and CX30 need to connect to ACC line 4 pcs Slim Invisible type sensors (Same model used in premium brands) To install, drill 4 holes (drill bit...
