For the road car to join the one piece OEM system to a new secondary CAT pipe I need a muff coupling (ie to form a butt joint both pipes same diameter.

Failling that it will be down to searching for 6 inches of bit of 54mm bore tube or 50 OD tube.

demon tweeks do this kind of think, but not the size you are looking for by the looks of it

Linky

depends on the size needed, you could use stainless steel hygienic pipe butt clamps like these thingies:




they are available in a fair few sizes and are cheap, heres a linky to a place I have stainless stuff from:

All Stainless Ltd

ps look under the "hygienic unions" section

[Edited on 18/8/06 by NS Dev]

Hi,

VW golf Mk IV has just such a joiner between front silencer and cat.

Take your pipe along to a motor factor and try the ones from different engine sizes for fit.

David

i may have some 50mm od