I just picked up a 2004 KX125 with a blown motor a couple of weeks ago and when I was researching the carrillo K5 rods I found that there other company CP Pistons makes forged piston kits for late model KX125's & 250's , They are complete topend kits with piston & Cometic gaskets. The kits are sold under the Moose label from Parts Unlimited and the whole kit sells for less than the price of a Wiseco piston alone. I ordered 1 my buddies run CP Pistons in there 4wheeler all the time.CBX