The HE website describes these better than I could. These are second hand taken off my car and stored since I fitted a sports exhaust and to be clear they don't fit over the Ferrari sports exhaust. For other after market ones the sleeve diameter internally is around 85mm. But they still may not fit so buyer beware.
However, they look great on the F430 standard exhaust, have been cleaned up, all grub screws are present and free moving and greased and I'll add the allen key you need if you want it - just a standard one so probably you have one already. Simple to fit. Looks stunning. Easy to remove for cleaning and polishing.
As you'd expect there are a few very small marks but probably not visible when fitted.
Free postage. £125.00

