Seen these on ebay http://cgi.ebay.co.uk/Honda-CBR400-CBR- ... 286.c0.m14" onclick="window.open(this.href);return false;
http://cgi.ebay.co.uk/HONDA-CBR400-CBR- ... 286.c0.m14" onclick="window.open(this.href);return false;
Any idea which is the better or are there any others

avoid the 2nd link.
unless bought from a exhaust manufacturer (micron etc) avoid 4-1 set ups. the ideal headers for a NC29 are 4-2-1
4 pipes welded in to 2 then in to 1.
why? a lot of 4-1 headers cause a gap in the power range that cant by tuned out.

1st link ask how they are set up.
Graeme France makes his own headers that are especially for NC29s.

the second set would be the 1 i'd buy...4 into 1 is good for hi rpm...all the time
4-2-1 has abit more midrange
i still race with stock headers..as im still not at the limit of the bike to req 3ish more hp
some things honda get right.
stimpy

dont know if your ve gone ahead and made a decision but the second set is the style i would go for, i got them and they are not too bad :note you ll need a slip on end can to replace the old 3 point bolt on.