http://www.hmfengineering.com/hondarinconpg.html

claiming an increase from 16hp to 20.4hp when jetted right.

I have a system from these guys on my Hayabusa and like it.

4.4 is a pretty big claim though. we'll see. Just ordered some ITP holeshots, gonna look into some rims too.

 

just ordered it, $229+ shipping and they threw in a 170 jet for an extra$5. Should get here next week, 4.4hp increase seems very optimistic though, thats about a 27% increase over stock. I already have the K&N filter. Should be getting my tires about then too. Wish they had a piston kit for this bike.

Suspension, thats the next field that I really want some action in. Maybe a call to Fox might be in order? Ohlins was rumored to have something also. I'll let you guys know how it works. There's two toehr rincons I can do a quick drag race with. One guy has already taken out the baffle on the end and thinks theres a bit more power. He added a shim under the needle too. HMF is calling for two shims under the needle, but at the altitude I ride (4-7000') at I'm not sure if thats gonna be too much.

 

will be very interested in how this works out for ya. please keep us informed.

 

so how ya like the pipe? notice a good power gain and lots of noise?

 

Are you saying a modified Rincon 650 has 20.4 HP, that sounds a little lame to me, the 400EX has 27.8 HP. My Foreman 450 is suppossed to have 22 HP stock.

 

i think the HorsePower ratings are at the rear wheel (though i may be wrong). According to the HMF site, the Foreman has a stock HP rating of what looks to be about 12HP. the 400EX, again according to HMF, has about 27 stock horsepower. it also looks as though the EX pipes can get very little more out of the quad where on a utility, they give good gains. utility quads typically have more packing in the exhaust and therefore less flow on the back end. jets are usually a little smaller too and the list goes on on the differences.