A forum for owners of Yamaha TTR250 trail and enduro bikes!

leigh · Senior Member

Lower shock bearing

hanzo · Senior Member

mine was similar mot tester picked it up and noted as an advisory so im guessing zero play is the ideal

leigh · Senior Member

Yeah makes sense. I've ordered a new one anyway. Wasn't sure if it was different than a regular bearing.

TTRfan · Super Guru

There are five bearings that can give rise to some movement (6 if you count the swing arm bearings themselves) but if your MOT man knows about dirt bikes he should be less harsh than with a 140 mph road bike.

You have the top and bottom shock bearings, two others in the relay/linkage arm itself and the bearings that join the drop arm to the swing arm.

A little bit of movement in each can result in perceptible movement when the TTR is on the stand and you lift the wheel up and down gently.

It is very difficult to work out exactly which bearing(s) are worn. The lower shock bearing is the usual culprit but I have had occasions where I have replaced it only to have to go back and replace the others because the play was still more than was acceptable to the MOT man.

It is likely that you may still have a small amount of play even with all new bearings fitted.

Dirt bikes are not an exact science wink

Brian

leigh · Senior Member

Thanks Brian.

Seems like the lower shock is the culprit. It's only minor I'll keep an eye on things and change when it starts to get worse. I plan to strip/replace the whole lot at some point. Just so I know I can trust them.