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300 R torqmaster blowout

Guest Contributor

What speed is the torqmaster lower unit on a 300R 4stroke capable of before blowout will become a concern?  Boat is a triton  21 bass boat about 1.25 below pad frequently touching 90 MPH.  I have another prop that is capable of a couple more MPH but don't wan't to risk a blow out so I haven't pushed it.  I am worried there would be a substantial performance loss running a heavy boat like this with the new bigger sportsmaster gearcase. 

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