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  1. 01-06-2022, 04:36 PM #1
    MakingWaves
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    Ranger w/ 300 Hp Merc 4 stroke

    Anyone have any experience/feedback regarding a 521 (I'm assuming a L only) with a 300 hp Merc four stroke? Thx. Steve
    2023 Ranger 521R DC
    Mercury 250 Pro XS 4S
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  2. bass.man65
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    #2 01-06-2022, 06:54 PM
    Quote Originally Posted by MakingWaves View Post
    Anyone have any experience/feedback regarding a 521 (I'm assuming a L only) with a 300 hp Merc four stroke? Thx. Steve
    Don't think it will be much better than the 250 considering the 300 don't even make 300 HP.
    04 521VX 250 Pro XS
    14 521C 250 Pro XS
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  3. rchavis
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    #3 01-08-2022, 12:33 PM
    I thought Mercury motors had tad more Horse power.
    I know they have to be more or less.
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  4. bass.man65
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    #4 01-08-2022, 02:50 PM
    Quote Originally Posted by rchavis View Post
    I thought Mercury motors had tad more Horse power.
    I know they have to be more or less.
    The 300R is over 300 like it should be. It's the Pro xs 300 that is the underachiever. If my memory is correct the Pros xs 250 makes around 274HP the 300 is like 294.
    04 521VX 250 Pro XS
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  5. MakingWaves
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    #5 01-08-2022, 05:16 PM
    Quote Originally Posted by bass.man65 View Post
    The 300R is over 300 like it should be. It's the Pro xs 300 that is the underachiever. If my memory is correct the Pros xs 250 makes around 274HP the 300 is like 294.
    Just kind of surprised that there are not more guys running them since Ranger increased the hp max limit on the L boats a year after I bought mine :(
    2023 Ranger 521R DC
    Mercury 250 Pro XS 4S
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  6. John Hagins
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    #6 01-10-2022, 06:44 AM
    Quote Originally Posted by MakingWaves View Post
    Just kind of surprised that there are not more guys running them since Ranger increased the hp max limit on the L boats a year after I bought mine :(
    Most tournament trails only allow 250 max hp.

    John
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  7. MakingWaves
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    #7 01-10-2022, 04:29 PM
    Quote Originally Posted by John Hagins View Post
    Most tournament trails only allow 250 max hp.

    John
    I meant to also say non tournament guys.
    2023 Ranger 521R DC
    Mercury 250 Pro XS 4S
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  8. vegaskid
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    #8 01-21-2022, 04:32 AM
    I have a 300 pro on my 521. I like having the extra power. It's not as fast as I expected it to be. Tournament loaded I get around 68 mph at 5850. This is my first ranger so I'm assuming they are all slow ��
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  9. MengRanger
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    #9 01-21-2022, 07:52 AM
    Vegaskid, I would have your motor checked (assuming 4 stroke). You should be in the 70's. Most guys are running 67-69 with the 250 4 stroke. Your RPM's seem too low, so not sure if you have the right prop or if you are getting 100% of the throttle.
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  10. bass.man65
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    #10 01-21-2022, 05:21 PM
    Quote Originally Posted by vegaskid View Post
    I have a 300 pro on my 521. I like having the extra power. It's not as fast as I expected it to be. Tournament loaded I get around 68 mph at 5850. This is my first ranger so I'm assuming they are all slow 😂
    Is this on a L boat if so probably not far off. The L is the slowest boat ranger has ever built. If on a 521C it would be 3-4 mph faster.
    04 521VX 250 Pro XS
    14 521C 250 Pro XS
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