The Bitza improved brace bars for the XK8 X100 XKR convertible rear cross member braces are designed to be a direct upgrade for the original brace bars, both functionaly and visually improving the underside of your Jag.
The original parts rust badly and good ones are impossible to find so these are made from tig welded 304 stainless steel so they will not corrode and being a tubular design they should help reduce chassis flex compared to the originals. 
Supplied with brand new bolts to fix to the chassis.