650/X-2 650sx and wiseco pistons?

[anthonystempak]

I'm thinking of using some lightweight forged piecies.
Is there any pro's and cons or just set them up to there specs and go?

 

[john zigler]

wiseco pistons are a forged piston, instead of cast. they expand quicker, and more than a OE cast tpye piston. because of this they MUST be set up "loose". we run kawi's at about .007 to .009 for clearance depending on mods done to motor.

there really is no benefit that you would notice in running them.....

in a rec ski, i would just stay with an OE cast type piston. they are more user friendly.