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30HP upgrade from 25HP 2021 New motor

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  • 30HP upgrade from 25HP 2021 New motor

    What parts do I need to upgrade a brand new DF25ATS to a 30HP?

    thanks in advance

  • #2
    I think this subject is discussed fairly thoroughly in this thread on this site:

    https://www.suzukioutboardforum.com/...ki-owner-df40a

    I replaced the "air restrictor plate" on my DF25A motor, as described in that thread. The motor felt and sounded a little stronger, but the change didn't produce a measurable improvement in speed. (Less than 1 MPH improvement.) After a few months, I put the original part back in the motor just to know I was using the "stock" setup.

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