4271R x 1. XK120 RIGHT HAND DRIVE Bell Brand Twin Sport Stainless Steel Tailpipe  Exhaust System. We consider Bell to be the best sounding exhaust out there, and yes, they do sound nice!

The front pipe is a 2-into-1 'Y- design shaped pipe' in a 2 1/4" inch bore, which comes  from the standard cast manifold flanges down, and passes through the single chassis hole with the essential flexy section which absorbs the engine movement . It then joins to a dual / splitter  box which exits with twin tailpipes.

This comes with a nice dual tailpipe fitting bracket.

NOTE : XK120 exhausts are far easier to fit if you hang the tailpipes before the box due to the cranked shape.