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You are here: Home > F2 Motorcycle Projects > 2008 Yamaha YZ250F
Video Intro: Plans for the YZ250 F



This 08 YZ 250 F is a special bike build for 2 reasons:

  1. This is joint effort between Malcolm himself and Dave Simon of F2 to design a real potent weapon for motocross and GNCC racing.
  2. When completed, it will be auctioned off to the highest bidder, with the proceeds going to Malcolm's children's charity in Mexico. So the highest bidder wins twice. They get a one-of-a-kind world beating motorcycle, and a great tax deduction.

The bike building results of Malcolm and Dave started in 2005, when they worked together to build a KTM 200 EXC. Dave knew how to make stuff powerful and fast, but sometimes that was to much. Malcolm stepped in with all the years of knowledge and said " You know, all this rip roarin' power isn't what you want for off road. You need power, but it needs to be smooth and controlable, so the rear tire can hook up and make it effective.

When finshed, the bike was tested in Dirt Rider magazine. After riding the bike, they simply said "Malcolm Smith is a genius". This proved once again, that "The Legend", is the legend for a reason.
There have been a few joint projects since, but they were personal. If you want to have one of the baddest 250's around, stay tuned, this may be your chance.

All bike build information and videos on the build will be available on the F2racing.net website. All items or services are available though F2 Racing or Malcolm Smith Motorsports .

It's time to make the YZ Fast.

We started by getting a set of mid-range cams coming. While we were waiting, we put the head through some flow exercises. We will be rebuilding the head this week with our beehive valve springs to help reliability at the higher rpms. Next we went to the carb.

Installing the fast cap was the first thing we did- even before we started the build. It really helped with throttle response even when the bike was totally stock. We really can't live without this thing on any of our bikes now!


Another must have is the and Powershot from .


This thing needs to flow


Easy bolt on power
(F2 fast cap and fuel screw)

The power now from scary fast the only one on the market that really works!

Rev higher and last longer with F2 valve springs.

Finally to make things easier to adjust, we put in our F2Racing fuel screw (see below).

. . . Stay tuned as we move on to the chain, sprockets, and other things to make the Little YZ into a monster.

AND . . . check back for auction date.


Here is some more low end spunk.
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Magnetizer Clutch Cover - Yamaha
Price $169.95
Sale Price: $89.95

Will this fit my bike?
Cylinder Honing
Price $34.95

The seal between the cylinder wall and the piston rings, is one of the critical factors of the performance of your engine. A really good seal, insures the lowest amount of pressure leakage past the rings, which means a higher power output at all RPM ranges. Just changing the rings, in your modern 4 stroke engine, can and will help the power when broken in right, but correctly honing the cylinder will ensure the piston rings will mate completely with the cylinder wall.
We now offer this service to the public, instead of just to the race engine builders.
F2 Fast-cap is  to keep the fuel supply constant
Fast-cap
Price $29.95

for more consistent and higher top speed . . .
Ultimate Fuel Screw
Price $24.95


     
  • Allows for easy adjustment

  •  
  • Cheaper aluminum fuel screws can seize with moisture

   
 

F2 Racing
PO Box 22097
Flagstaff, AZ 86002-2097
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