2002 WR426F Free Mods, what are they?

Could someone tell me what and how to do or where to find and how to do the free mods for the 02 WR426f? I just got me one and what to get as much out of it as possible.

thanks

1. throttle stop / replace with yz or cut

2. airbox lid / put on shelf in garage

3. check into gyt-r insert for exhaust (the checking part is free...)

4. ride like mad, worry about rest later (gray wire, yz-timing, etc.)

1. throttle stop / replace with yz or cut

2. airbox lid / put on shelf in garage

3. check into gyt-r insert for exhaust (the checking part is free...)

4. ride like mad, worry about rest later (gray wire, yz-timing, etc.)

the throttle stop would be the biggest thing. Where do I cut it?

BTW, I already took the airbox cover off.

Air lid

Throttle stop

YZ Timing

YZ Exhaust

YZ "E" series needle (OBELN or OBEKN)clip 3

Grey wire

raise forks 10mm

recommend YZ Tank & seat, New bars, and work the suspension

Have fun

Air lid

Throttle stop

YZ Timing

YZ Exhaust

YZ "E" series needle (OBELN or OBEKN)clip 3

Grey wire

raise forks 10mm

recommend YZ Tank & seat, New bars, and work the suspension

Have fun

woudnt it be cheaper to buy a yz and stick lights on it ? or is this a us licensing thing ?

New to the forum but have done pleanty of poking around andd ive concluded that i could stand to do a few things to make my bike more enjoyable. First off I ordered a pair of Acerbis rally handgaurds, a keyed ignition, and in the process of hunting down a pair of SM wheels. I am 6'1'' and 205 lbs and i can make the bike bottom out pretty easily should i maybe raise them more than 10 ? Prob gonna do the gray wire mod and the ais removal on my wr426f but what i really wanna improve is my brakes. Theyre stock :worthy: soo was looking at an ebc 320 mm any suggestions about which pads? The current brakes squeak a little much for my liking.

Thanks:worthy:

Air lid

Throttle stop

YZ Timing

YZ Exhaust

YZ "E" series needle (OBELN or OBEKN)clip 3

Grey wire

raise forks 10mm

recommend YZ Tank & seat, New bars, and work the suspension

Have fun

Go here http://www.thumperfaq.com/ and do all the free mods , they are the same on the 426 as the 250. Check into the common free mods as well. My old 426 really liked proper jetting and the YZ cam timing mod. WR Dave

trying to find a place to buy the gytr ais removal kit.. the yamaha site says add to wish list....

trying to find a place to buy the gytr ais removal kit.. the yamaha site says add to wish list....

No AIS on the 02' 426.

I have a '02 426 with:

Throttle stop mod

Grey wire done

Air box lid gone

NoToil Filter

Stainless steel Oil Filter

ProTaper bars

Acerbis Rally 2 handguards

Jardine RT4 exhaust

Devol Radiator Guards

Planning:

FMF Powerbomb header

Clark or IMS desert tank

YZ seat and shrouds

Devol Skid Plate

HID headlights

New plastics (White and Black)

Shark fin rear disk guard

Low profile signals and plating for Dual sport if my state quits being dip@#$* and stops following California!!!!

Hey guys

Dont mean to be a thread stealer but how is the grey wire mod done??

cheers

Hey guys

Dont mean to be a thread stealer but how is the grey wire mod done??

cheers

cut the grey wire coming out of the CDI. Some people pull the pin out of the connector and wrap it in elec tape so it won't short on the frame.

3838110910_5a3eb8c34f_o.jpg

thanks mate, apprecate it

cheers

What does the gray wire go to?

1 hour ago, Christian Jennings said:

What does the gray wire go to?

It is a 'defeat' wire when plugged in.

It defeats the YZ closed and partial throttle map and rev limter increase, which is only active when the gray wire is dissconnected.

Right on kran, appreciate the help. I have my bike torn apart. I had a spark plug break off at the threads 😠! So anyway I'm switching over to the yz timing while I'm there. I did a quick look at the wire harness. Seems like there is already a wire missing? So I'm not sure if previous owner may have already removed. I do see a wire that looks gray. Bun need to spend some more time there. Next I also want to cut the throttle stop. Eventually I think I'll fork out the dough for the yz 450 carb. You think it's worth it?

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