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i was just wanting to know if the bottom end in the 450 xc would hold 13.5 to 1 piston,8/06 cam and head work i was told the crank would go out because of the roller bearing is that right
 

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i was just wanting to know if the bottom end in the 450 xc would hold 13.5 to 1 piston,8/06 cam and head work i was told the crank would go out because of the roller bearing is that right

I would highly recomend changing the roller bearing out for the ball bearings with the extra compression or any one that tends to ride in the upper rpm limit
 
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