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Makotosun

1974 Yamaha dt125a

  • Crabman
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1974 Yamaha dt125a was created by Crabman

Hello. I’m a newbi! 
I have a 1974 Yamaha DT125A. I just finished getting I back in running condition. Runs great! The specs say it will go 65mph.  Not sure about that!
My question……if I change out the primary drive gear from 15 teeth to 16 or 17
will that increase the speed? Any help would be greatly appreciated.
Im happy to be a new member to the group.
Dan.
05 Jul 2021 10:27 #1

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Replied by MarkT on topic 1974 Yamaha dt125a

According to Capt. Dave, going down one tooth on that model actually gives you a higher top speed. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
05 Jul 2021 10:59 #2

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