Genuine Renault Tie Rod Ends for all Megane 3 RS models.
If it's not the lower Perfohub ball joint knocking, then it's probably one of these. Or both.
Fits: Megane 3 RS 250/265/275 including Cup, Trophy, Cup-S and Trophy R models
OE Renault part numbers: 485202698R (Left side) and 485203894R (Right side)
Unsure of fitment? Send me an email at mark@baguettepower.com and I can check it using your car's VIN number.