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400exroost
08-17-2006, 04:49 PM
hey guys, i have a 2003 400ex, and the only thing i did to it was throw on razr 2's on the rear and add a dial-a-jet. I am looking at further upgrades and want companies that are good, but out of the norm a bit.

I was thinking:
exaust- nmotion, pro circuit, or fmf
cam- hotcam stage 2
10.8:1 piston
i would probably bore it to 416, maybe 440.
maybe an xr400 head gasket

other simple stuff like a air filter/nerfs will come later

ugotbit
08-17-2006, 08:50 PM
I have a yosh full system and like it. LRD also makes sick exhaust set ups. I would save the cam untill you redo the top end, Im looking to do a 416 myself with a cam, Im leaning on the Stg 2 Hotcam. Dont forget about a K&N filter either. With the Stg 2 cam you might also want a rev box.HD Head studs and a CRF cam chain and Cometic gaskets are also good parts to concider. Where in NY are you from? I have a post in the C&D section with prices on all the parts for this, its under gathering parts for a 416...