I got some carbon ones "Akrapovic" 63-89mm from Alixpress for around 20 aside. Be aware 100mm outer diameter will not fit the bumper cuts.
63mm is the closest fit, as the OE external diameter is 61mm. There is a bit of play but the clamps are strong enough to hold them well.
What I did with mine, as the tips are slitted, they compress when the clamp is tightened, I slightly cut the slits to make them even wider to give them more room for a better compression when clamped.
The quality of these exhaust tips is unreal. Titanium steel with carbon finish and a real quality clamp.
https://www.aliexpress.com/item/Inle...4-042871f42a5c