Bapple1403 Posted October 27, 2021 Share Posted October 27, 2021 So is the hd9 just a detuned hd10 or is it a complety different motor.. I see they are the same CC's so it struck my curiosity.. On a side note of course they put a different motor and more hp after I buy a 2021 hd8 dps cab.. O well its a proven setup atleast Link to comment Share on other sites More sharing options...
Johnnymac10 Posted November 6, 2021 Share Posted November 6, 2021 Also wondering the same Link to comment Share on other sites More sharing options...
Johnnymac10 Posted January 1, 2022 Share Posted January 1, 2022 Bapple1403 did you ever get an answer ? Link to comment Share on other sites More sharing options...
Bapple1403 Posted January 1, 2022 Author Share Posted January 1, 2022 No Link to comment Share on other sites More sharing options...
Johnnymac10 Posted January 3, 2022 Share Posted January 3, 2022 I can't find any info at all on the 976 cc rotax being called a hd9 or hd10 and several different horsepower ratings. It's a big secret I guess. I don't understand why nobody knows ? Link to comment Share on other sites More sharing options...
Steelslinger Posted January 5, 2022 Share Posted January 5, 2022 HD9 has smaller heads and is basically detuned to lower horsepower vs. the HD10. Someone on the Facebook groups had posted a list of all the part numbers that were different. Link to comment Share on other sites More sharing options...
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