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Discussion Starter · #1 ·
Wow, I'm impressed to say the least! I just came back from my first day of riding my new YFZ450 and it rocks!

I've done some mods and it revs out so quick (too quick even)!
My mods are a full Spark's exhaust, cam mod, no airbox lid, jetting change, and 18" MX tires. It nails the rev limiter in 5th so quickly!

On my Trinity 440ex I run the local track in 3rd and some 4th. On this YFZ I have to run in 5th and sometimes drop to 4th for a few tight turns.


Anyone else seeing the same thing? I'm considering puting a slightly smaller sprocket on the back and/or one tooth bigger on the front.
 

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:rock The 450 seams to be geared low to start with so to fix your problem with the 18's i put the 15 thooth front sproket on and it will put it a touch higer gear ratio like stock but the motor could pull a 37 tooth in the rear but i would just put the front on and see if you like it ! i had to gring a little out of the case saver but that is simle also the stock chain will work just fine!!
 
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