What size for mx???

[MXRACER86]

Hi I am setting up my 400ex for mx but I don't know what size swingarm I should get. I want a lonestar swingarm and I don't know what size to get, standard or +1 1/4? Please can somebody help me????

[redroost85]

You'll want the +1 1/4 but it depends on some other things.

Are your arms + anything forward? If they are, then definitely +1 1/4 swinger. This will even out the balance of the 400. If your arms aren't + anything forward, then you will most likely have a push in the turns. I believe that I am right on this, but if not I'm sure that a resident expert will correct me.:p

Also, if your motor is fairly built then you will want the longer swinger as well.