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400EXtreme
06-21-2007, 08:51 AM
Well i needed a new piston and the one i got was http://www.rockymountainatv.com/productDetail.do?navType=type&navTitle=Engine&webTypeId=201&webCatId=17&vehicleType=&pageLinkUri=&prodFamilyId=3784
And the guy that was putting it in said it was the wrong piston and when he tried to kick it over it would hit the cylinder head. But isn't the stock size 54mm? Is he just doing something wrong or did i order the wrong piston.

zack221
06-21-2007, 01:36 PM
If you put in the right year bike then it should be the right piston.Maybe the guy dont know what hes doing or he messed the old piston up so he decided to tell you you ordered the wrong piston.

zack221
06-21-2007, 01:36 PM
Also did you hone the cylinder for the piston?