YorkshireVFR Posted June 25, 2022 Share Posted June 25, 2022 Gen3 query regarding the stock exhaust can. Mines stamped HM MT4 E1. Would one stamped HM MY7 E1 be a exact replacement? Link to comment Share on other sites More sharing options...
Member Contributer Lorne Posted June 25, 2022 Member Contributer Share Posted June 25, 2022 6 hours ago, YorkshireVFR said: Gen3 query regarding the stock exhaust can. Mines stamped HM MT4 E1. Would one stamped HM MY7 E1 be a exact replacement? Assuming both cans look the same, yes. 18310-MT4-670 is the p/n for the 1990 & 1991 models, and 18310-MY7-670 is the p/n for the slightly longer but otherwise identical unit Honda made for 1992/1993. The 1994-1997 exhaust, p/n 1831-MZ7-670, is completely different - and much less attractive. For reference, I've attached the pertinent pages from the parts catalogue. As it happens I have a spare -MY7 but shipping halfway 'round the world would be costly. Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted June 28, 2022 Member Contributer Share Posted June 28, 2022 The UK-spec ones have different part numbers (003 instead of 670), but the principle is the same! Honda changed the design (worldwide, it appears) in '92, but they should still swap. The numbers stamped on the can aren't the part numbers, but they reference the bikes' PCNs (MT4 and MY7), HM probably meaning Honda Motor and the E1 being the European homologation code. Ciao, JZH Link to comment Share on other sites More sharing options...
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