I am going to buy the kit from atv racing that will convert my 300ex shock mount to a 250r's so i can use 250r shocks and a arms. I'm going to buy laegar's pro trax +2 arms. I was wonering if i should just get standard length for a 250r because i heard that standard length will add about 2 inches to a 300ex. Thanks

 

Yes the standard length will add about 1.5"...

Instead of buying a kit for your shock mounts, why not spend a little extra cash and get new shocks made to fit you app. and you will have a lot better pair of shocks to boot!