The dirtwheel dyno of the new honda 450 produced 37hp at 7300 rpm stock and with a white bros slip on, open airbox and a 190 main jet it made 40.0 at 7200 rpm.

Dirt wheels also dynoed the yamaha 450 and got 39.3 at 8050 rpms (stock) and with a gyrt slip-on/open air box and a 165 mainjet the results were 44.6 at 8200 rpm

Dirtwheels said blah, blah blah

 

Hmm.......seems like most everyone is leaning towards the YFZ with mod's. HMF also leans towards the YFZ when installing the HMF pipe.

 

I can confirm that stock horsepower on the YFZ.. its listed as 39 horsepower on the MSO (manufacture statement of orgin) that I received upon purchase.

The test sounds very credible.

 

Dirtwheels also said the wet weight of the yamaha was 378 and the wet weight of the honda was 376

 

Sounds like we got a close one here. I wish they would have tested it with a different slip-on tho, but im sure the gty-r isnt the best for the yfz too.

"Dirtwheels said blah, blah blah"... lol i hear ya, atleast they got good pictures, thats why i buy it.

 

Dirtwheels said B/S always i dont them.

hey BOB.. i dunno if u can still remeber me. im the guy who call u from kuwait befor 5 months. i wanna ask about 2 things :-

a- i remeber u told that u will release a drag race pipe . ay updates?
b- i wanna ask about the cost of the hole kit ( the 686 kit ) with everything .. cam,valve....etc.. how much that thing cost me ? .. we wanna bolt-on it here.

the 1st guy who LTE pipe is spank those 0.50 overbore banshee's here.. [img]i/expressions/face-icon-small-smile.gif[/img]))

 

Awesome!! These new quads rip!!!

 

For a long time I have seen mods for the YFZ450 but I have not seen NEARLY as much as I did on the TRX450R. It seems like yamaha is trying to make the power of the YFZ450 come kind of close to the TRX450 [img]i/expressions/face-icon-small-wink.gif[/img] But it makes me mad that they don't have as many mod's to put on the Honda and to much on the Yamaha. Oh, well..

 

14mins , did they use ct racings dyno or dynojet
The 50hp piped rappy dyno was funny

 

Just like the dirt bikes, I would expect the Yamaha to have the edge in raw horsepower. And, just like the dirt bikes (and everything else), the Honda to have the edge in handling!