Yes but please bear in mind that while these California mirrors will fit a 131 they have a different base to the original mirrors. The 131 Sport mirrors are unique to the 131 as they have a larger base which is contoured to fit the 131 door. As the base is larger, the screw holes are in different places. If a Demon Tweeks mirror is used on a 131 a new screw hole will need to be drilled on the door. Ask
kev131 if you don't believe me.?
The Demon Tweeks price is for a single mirror as they ask you to select "left" or "right".