This is a pretty basic outline for jetting on the YFZ450. These settings are for sea level if you are anywhere from 1500ft to sea level these settings should be very close to right on. Anything above 1500ft should lean the settings accordingly. Also, as a good adjustment you should raise the...

Ok guys this thing has been out for a bit lets start sharing what we have. Post up your aftermarket parts, elevation/city, a basic map, and any dyno sheets if you have had a custom map built and dont mind sharing it that would be great, if I forgot any relevant information feel free to post it...

This is a simple write up for any year yamaha yfz450 quad to convert to yz450f cam timing.... also known as the "cam mod". No this will not hurt nor damage the motor in any way IF done correctly. I know some people have heard that there could be some issues with doing the cam mod on an '06/'07...

Here is the chart from vortex. I tried to rotate it but made it blurry. Please list your mods and settings your running if you are using the ''stock vortex pre installed maps''... If your running a ''custom'' map please list your mods and where you received your map from that way people have...

2014 YFZ 450R Trail Machine *Elka Stage 5 front shocks with Roll Design WORCS springs and valving *Elka Stage 5 rear shock with Roll Design WORCS springs and valving using OEM link *Walsh MX a-arms and caster bracket *Walsh +1 stem *Walsh stem kit for Precision anti vibe clamps *Walsh rear...