Can you restrict a cb400 super four to 33hp?

yup!

is that with the washers? and which ones would it need

yup, it's litterally 4 washers and can be sourced by most motorbike shops. You could quite easily make some of your own up or FI international do the kit i think.

FI international dont do the kits for the super four (maybe because its an import? i heard that they only do them for bikes sold in the UK) so il have to look everywhere for the washers or try making them myself. no idea how though

just a thought, i couldnt get washers from a similar honda n put those in? cbr400 or vfr400 maybe...

http://www.fiinternational.com/ShowDeta ... type=Honda" onclick="window.open(this.href);return false;

Expensive though!

Didnt see that .I asked a mate and he said you could probly get a sheet of aluminium and the dimensions from the internet and go from there. sounds okay to me, i get to keep £200!

yeh, the dimensions are somewhere on this site. I think I remember somebody saying the internal diameter i.e. hole was 18mm but don't quote me on that!

If you get stuck, and find out the measurements, I should be able to get a set made up out of stainless, normal steel or ally - you're choice, for a tenner. can't believe people are charging £200 for a set of washers or should that be "restricter blades" - ooohhhh - how technical

Can you restrict the CPU somehow? Will need a proper person to do that. My dad is DETERMINED to pursuade me that making your own is illegal but the law says that as long as its 33hp its ok. the police can dyno the bike if they really want. il get back to you on that one ensie, it sounds a good deal :)