on my rm125 the shock is sounding like a sucking noise with some grit in it, does anyone no why? and how to fix it thanks.

Sounds like it's time to have it serviced.
When was it serviced last?
Doing it regularly?

Paw Paw

What year??? Good chance it has never been serviced and as above has mentioned, probably time.

Paw Paw 271 wrote:

Sounds like it's time to ...more

Paw Paw 271 wrote:

Sounds like it's time to have it serviced.
When was it serviced last?
Doing it regularly?

Paw Paw

idk when it was last serviced i have only owned the bike for a year but i guess its time to do it. do u now how much it would cost roughly?

BR8ES wrote:

What year??? Good chance ...more

BR8ES wrote:

What year??? Good chance it has never been serviced and as above has mentioned, probably time.

its a 07 so its probably time for a service

When it sounds like grit it is usually the shock mud flap / shock splash guard rubbing on the swingarm. The sucking noise means it has air in the system. So if air has got in then oil has got out and it needs rebuilding.

www.mx-parts.com

Shock seal is prab shot. New shock seal, dust wiper, and o rings are in order with some fresh quality fluid. Do the forks at the same time if in doubt on those get it all fresh together that RM WILL THANK YOU!

BR8ES wrote:

What year??? Good chance ...more

BR8ES wrote:

What year??? Good chance it has never been serviced and as above has mentioned, probably time.

finlay vanmulbregt wrote:

its a 07 so its probably ...more

finlay vanmulbregt wrote:

its a 07 so its probably time for a service

Many years past the normal service time if never done. It is a regular service item. The shaft may also be worn if the seal head is worn very bad.
If should cost about $90 plus parts to get it serviced, but check around.

Paw Paw