How to stiffen suspension on my dirtbike?

Question

I have a TTR125L and every time i jump a 3 ft jump, it bottoms out, what should i do?

Answer 1

there is not much you can do to stiffen the suspension, and a shop cannot do much either....

I too have a TTR 125, and it is next to impossable to find aftermarket springs that will hold anything heavier than a 10 year old.

This is what I did....

take the forks off, drain out the old fork oil, add a stiffer weight, like 15 wt. oil....

as far as the shock goes, try tightening the preload adjuster, and thats about all you can do to it.....

Answer 2

You can add more preload to the rear shock, or you could swap out your springs for some stiffer ones, or change out your shock fluid for some thicker fluid.

You may be too big for that bike, or it could be the way your landing. Are your knees bent and are you using them to soak up some of the landing?

Answer 3

Unless you know what you are doing I would take the bike to a specialist in suspension as they will get your weight and then set the bike up to suit it.  Everything the fellow above said is correct and you can adjust the fluid in the forks to change the rebound and also get a stiffer spring.  You could perhaps look at what size spring you have in the bike and try going up a size and see if that works.

Perhaps if you dont have the money to outlay for someone to do the work for you you could ask a specialist via phone what size spring you should be running for your weight.  

I know we always have to get springs basically shaved down for my son as he is just so light that it is difficult to get a spring for his weight.

Answer 4

Add pre load.

Or buy a decent MX like a CRF.