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The reason the TORs come with 115s is because that is what Triumph recommend you fit when these silencers are used on a 790cc Bonneville. The 790 has/had different needles in the carbs leading to a different main jet requirement to the 865cc Bonnie (your bike) when free(er) flowing silencers are fitted. Triumph state that TORs can be fitted to the 865cc Bonnie without changing the main jets so your dealer is not giving you BS as far as Triumph are concerned. However, the comments made by others that the bikes come lean from the factory are also correct, so I would also recommend fitting the 115s.
I bought my 865cc T100 second-hand with just over 500 miles on the clock and it came to me with the standard silencers. I recently fitted some aftermarket silencers to it and when I opened up the carbs to put bigger mains in I found it already had 115s in it. I suspect the original owner had TORs fitted by the dealer from new but sold it without them fitted. Unbeknown to me I've done the last 9000 miles with standard pipes and 115s instead of 110s - I didn't notice the bike running rich at the top end of the rev-range! Probably because it wasn't.
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Paul.
Herts. UK
Opal & Tangerine 05 T100 (865cc)
(Previously Ducati Monster S4 and numerous UJMs)
Last edited by PAAS : 08-19-2007 at 05:08 PM.
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