New yz450 owner

I just bought an 04 yz450. I'm little worried It may be a little over my head. But what the hell I'm impulsive and I couldn't help myself. I'll mainly be trail riding. Can anybody tell me what kind of mods I may need to do. Does the yz450 have a spark arrester?

If you find its too much power for you, ive heard of guys going to the WR timing to tame the bike a bit. Personally I would leave it alone though, you will get used to the power. I trail my bike alot with everything stock, but I would recommend a good set of hand guards though (for those finger smashing trees!) I once broke my pinky finger between the handlebar and the clutch lever when I had to swerve for a downed rider. I only clipped the tree by an inch, man did that suck!

No they do not have a spark arrestor and I would inform you to buy a flywheel weight.

On the '04 you probably won't need a flywheel weight as they added weight to it in '04 anyway. Try it first and see what you think. If you find it easy to stall you may consider adding weight to the flywheel.

The only things I did to my '04 were to drop to a 13T front sprocket, get a Pro Moto Billet endcap for the exhaust with the quiet insert and spark arrestor, and add a Trail Tech kickstand. That's all it needed, but then again I wasn't afraid of the power either.

You bought a good bike. It just may take a little getting used to for you to realize that. :)

On the '04 you probably won't need a flywheel weight as they added weight to it in '04 anyway. Try it first and see what you think. If you find it easy to stall you may consider adding weight to the flywheel.

This is true. Comparing the weights of flywheels with the weight added as a welded on ring, the Dr.D weights are 4, 6, and 8oz added weight. The GYT-R flywheels from Yamaha are listed as to their inertia effect, rather than their added weight, but they equate to 5oz for the racing flywheel, which is stock on your bike, and 7oz for the offroad. I have a 4oz Dr. D, and for trail riding, it's a little light. Dubach says their 6oz is their most popular, but that's not so different than what you have. Like others have said, try it and see.

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