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  1. #1
    sourpower RXT's Avatar
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    Jan 2006
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    HP Ratings Stg. 1

    I'm familar with the MPH gains of the Riva Stg.1....does anyone know the approximate horse power gains?


  2. #2
    ROTAX RACING performance
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    Apr 2005
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    RIVA stage 1 has only the Air Filter to gain power, and riva claims 5 HP (as the RIVA RACING Kit has 220 HP compare to stock 215.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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