i got a 97 300ex and my friend has a 91 250x(the same thing pretty much) Anyways his quad and my quad both have the same problem that we tighten our chains and then ride, and we get back and they are just as loose as before. I was wondering if anyone else with a 300ex or 250x had the same problem as us. cya

 

how old are your chains, if you have a old chain it will do that

 

It could also be a new chain because they will strech I have not had that problem with my 250x yet.

 

Make sure the bolts are tight enough.