1. Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

Is there a final drive swap to drop cruise rpm on my maxim x?

Discussion in 'XJ Modifications' started by squidx85, Jun 28, 2020.

  1. squidx85

    squidx85 Member

    Messages:
    40
    Likes Received:
    11
    Trophy Points:
    8
    Location:
    South Dakota
    I was just wondering if any of you guys know if there's a simple final drive swap I can do to drop my cruise rpm on my 85 maxim X. (Does the xj700 air cooled have a different final drive? Or do other yamaha final drives that could be swapped in?) I'm constantly searching for that 6th gear. Cruising at 6000 rpm is just unnecessary, I think it would be able to pull that same speed at 4500 or so. I don't mind downshifting to pass and go up hills, this isn't a diesel pickup.
    Thanks for any info.
     
  2. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

    Messages:
    13,007
    Likes Received:
    3,954
    Trophy Points:
    113
    Location:
    near utica, new york
    If you’re cruising [spell chek to corekt Siri] at 6000rpm, you’re moving at pretty good clip.......but it sure won’t hurt the engine at all. It’s not a Harley
     
    Last edited: Jul 2, 2020
    k-moe and Kickaha like this.
  3. alanolynn

    alanolynn New Member

    Messages:
    10
    Likes Received:
    3
    Trophy Points:
    3
    Location:
    NY
    subbed

    I often wonder the same with my xj650. I don't go highway cruising, but I'd still like to lessen the high revving/vibration a tad.
     
  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

    Messages:
    17,553
    Likes Received:
    5,557
    Trophy Points:
    113
    Location:
    City of Seven Hills
    For refrence my first street bike was an EX500. It ran at 6500 RPM at 65 MPH all year long.
    The XJ engine does the same.
     
  5. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

    Messages:
    17,553
    Likes Received:
    5,557
    Trophy Points:
    113
    Location:
    City of Seven Hills
    Perform a running synch on your carbs.
     
  6. squidx85

    squidx85 Member

    Messages:
    40
    Likes Received:
    11
    Trophy Points:
    8
    Location:
    South Dakota
    Yeah, I am cursing, where the $@#% is my 6th gear!
     
    alanolynn likes this.
  7. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

    Messages:
    13,007
    Likes Received:
    3,954
    Trophy Points:
    113
    Location:
    near utica, new york
    Haha!! I corektEd siri’spelling
     
  8. mhudson

    mhudson New Member

    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Upstate New York
    I’ve wondered the same thing.... thought about swapping in a Virago final drive (if it fits) to see if my rpms would drop at all at higher cruising speeds on the highway....Not sure it would make a difference though, I think the drives geared the same..
     
  9. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

    Messages:
    17,553
    Likes Received:
    5,557
    Trophy Points:
    113
    Location:
    City of Seven Hills
    There are quite a few older threads about swapping final drives. All of them will bolt right on (save for the XS/XJ1100), but pay attention to the location of the shock mount.

    IIRC the only one with a significant change in ratio is from the Venture, and even then you only get a ~400RPM drop in engine speed (with a slight reduction in acceleration as well).

    The related threads:search
     
    Last edited: Jul 3, 2020
    mhudson likes this.
  10. PavelK313

    PavelK313 Active Member

    Messages:
    192
    Likes Received:
    79
    Trophy Points:
    28
    Location:
    Fairfield CA
    I once done 400+ mile trip on my maxim with RPM ranging from 6000-9000 and mostly around 8000-8500 in 100* heat without any issues what so ever. Just let her scream, bike is going to take it for much longer than you will.
     
    alanolynn likes this.

Share This Page