Adjusting rear suspension preload on a Honda CRF 300 L

For some reason the adjustment rings were really tightly stuck together. I did not want to use excessive force to break them loose, hence the need for extra pair of hands.

The 300 L suspension is a bit easier to get to than the 250 Rally. If using actual suspension adjustment wrench, you may need to do more disassembly than what I did, in order to get the tool in.


As always, the following is a description of what I did to my bike. It’s not intended as instructions to go mess with yours. Don’t touch your bike, if you are not knowledgeable of what your are doing.


  • 2 hammers
  • 2 metal rods, long screwdrivers or something similar
  • 1 motorcycle jack (or your preferred D.I.Y. solution)
  • 1 wife or significant other
  • 1 WD-40 or similar
My trusty suspension adjustment tools came through again


1. Lift the bike up, or at least prop it up so that there is no load on the rear suspension.
Secure bike to lift to avoid disaster

2. Remove right side panels Apply WD-40 on locking rings and threads

3. Summon the wife and provide 1 hammer + 1 metal rod

4. Tap the top and bottom rings in opposite directions to brake them loose.
Wife taps from the left side and you from the right.

5. Once loose, send away wife

5. Tap the bottom ring to desired preload. Make sure not to go too far and run out of thread.

6. Tap the top ring snugly against the bottom ring

7. Replace side panels

8. Lower bike and check results

Once the right side panel is removed, the rings are pretty easily accessible
Left side is accessible without disassembly


There is a yellow mark on the adjustment rings. Keep on eye on that so you will able to see when you are getting the rings to move in opposite directions.

Honda CRF 300 L rear suspension adjustment.

Looking from the right side of the bike, the bottom ring needs to move left and the top ring to the right.

Adding preload will result to lean even further on the left when on the side stand. This is an issue that needs to be addressed somehow.

4 Comments Add yours

  1. Rui Macielle says:

    Nice tutorial. Thanks.

    Liked by 1 person

  2. Manuel Brito says:

    What an excelent blog! Really anxious to get my 300L and apply ( when possível ) your tops.

    Liked by 1 person

  3. Nova says:

    Thanks, I no longer have a wife so was flying solo and just kept hitting the bottom ring to loosen it from the top ring.

    Thanks for the tutorial 🙂

    I upgraded my stupidly short standard side stand to a longer one and need to add some preload so that the bike was high enough to lean over a bit


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