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  1. #1
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    Lower unit interchange

    Will a sport master lower unit from an XS fit a Promax? Both 20”. Promax currently has a sport master that is damaged. Thanks I’m adva for any help!!

  2. #2
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    Both engines were/ are 300

  3. #3
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    Silverton section of Toms River, NJ/Stuart, Florida
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    Yes however if the xs has a bass mid and the Promax has an offshore mid you will need 4 longer studs in the mid section to bolt up to the lower unit cause the mating surface is thicker on the sporty.

  4. #4
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    Both are off shore mids. Are the drive shafts the same? Same spline same diameter? Will it go right together in theory?

  5. #5
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    Yes

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