Front wheels : HiPer Tech 3 single beadlocks
Rears: HiPer Tech 3 Dual Beadlocks, FREE tire changes
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As for tires, I liked the ITP HD's in the rear and the Razr 2's up front when I had my 400ex.
Ive heard that the new Kenda Kutter XC's are pretty good, might want to look into those.