I just ordered sprokets from sproketspecialist and the rear one wont fit.....the bolt pattern is way off....and the holes them selves are too small.......they say since they only offer upto an 03 speedmaster....something may have changed in 04....my bike is an 03.....i called my local triumph dealer and they tell me the rear sproket has never changed....any ideas???
America/Speedy rear sprockets are different than standard Bonneville line. Dealer ordered me one and they sent wrong one, wrong even in the book. My front was noticeably worn, rear not too bad. I changed front and flipped rear around the other way.
Most aftermarket sprocket dealers have the wrong one listed for the bonnieamerica and speedmaster. They always want to sent one for a standard bonnieville, which as you know will not fit. JT sprockets has one that will fit but its not listed for triumphs. Part number Jt 1332-41. This sprocket is not available in 42 tooth as far as I know. 41 tooth works just as well though. Only about 30 bucks from MAW online.