MCN - Motorcycle News Posted November 10, 2009 Report Share Posted November 10, 2009 Triumph will be doing a limited run of factory-fitted 1700c big-bore kits for the Thunderbird that are normally available as retro-fit parts. The 1700cc kit consists of new pistons, liners, camshafts and up-rated clutch springs and lifts power from 85bhp...More... Quote Link to comment Share on other sites More sharing options...
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