125-200cc 2014 CR 125 rear shock

My daughters cr125 rear shock has a strange rubbing sound on the rebound stroke, it doesn't leak and I have greased all the linkage bearings, also I have checked that there is no rubbing of the spring to the frame or anywhere.
It has a lighter spring for her weight (4.6) but other than that I haven't made any other changes to the shock apart from basic adjustments.
Any ideas what the sound may be?

Mine does the exact same thing after lightening up my suspension.
There is a little ball bearing inside the shock that has to be replaced with either a smaller ball bearing or a bigger one ( not 100% on which but will check ) it acts as a check valve. Not changing it wont do any harm to your suspension just makes an annoying frog noise as I like to call it lol.

Zack.

http://www.lt-racing.com/html/sachs_upgrades.html

I have pulled my linkage and swingarm twice looking for the source of that grinding noise! I put a 6.0 spring on my shock.
Good to know....

Mine doesn't do it. I've serviced it once at 40 hours, oil change and recharge. Didn't do it before or after. The LTR info was great. I wonder why some do it and some don't? Makes me think there might be quite a difference in production tolerances or something....

Thats great info thanks, It was getting a bit frustrating trying to find the noise.

Mine never made the noise until after a seal replacement and a re-valve. Les @LTR offered to fix it for free for but it doesn't affect performance so I'll wait until the next service is due. Meanwhile I think I'll troll my riding buddies and tell them I did the moose call mod to my shock when I installed the purple power band.