The 172 has a completely different front wing and bumper set up. I know cause I have had to repair one.
The 172 bumper and wing will however fit on to a standard clio, but it would involve either a bit of botching or a modification of the bumper mounting bracket, as it extends about 20mm further out. All the other wing and bumper mounting points are the same.
By the way the buggers at renault charge 25 pound more for a 172 wing than a standard one, its hard getting one from salvage as well as the majority of written off 172s are from frontal collisions.