TF WR450

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Yamaha WR450F

Motorcycle Law question: How do you make a Yamaha WR 450 F street legal? Answer have a C or 3 in the 8th digit of your serial number and your home free.



Hot weather Moose Sahara Stealth ($82)


Street legal in Idaho

If you are wanting to park it for a while you will need an ignition switch. I got mine from Baja designs it was part number 12-8001

For Idaho all I need is a brake light, mirror, and horn.

The 2005 WR450 has a two filament tail light so all you need is a brake light switch for the foot control. Baja Designs sells a kit (part number 14-9000)


I also needed some street legal knobby tires

I chose the Dunlop D606

front tire size is : 80/100 21 rear tire :110/100 18

rear tire :130/90 18

Removing air pump and throttle limit screw

The AIS removal kit

Below is the rear wheel horsepower measurement for 2009 bikes

RWHP 2009 YZ250.jpg

Below is the DynoJet measurement after removing the AIS from a 2005 WR45F

RWHP 2005 WR450.jpg




Martin uses the Garmin Forerunner 201

TomTom Rider (water resistant but not rugged looking)

Mio A201 at radio shack NOT WATERPROOF!

Comparison table

$290 Garmin GPS 60CX

$270 Garmin GPS 60CX

Feature Forerunner 201 Garmin GPSMap 60CX Garmin GPSMAP 60CSX
cost 150 305 350
weight 2.75 oz (78 g) 7.5 oz (213 g) 7.5 oz (213 g)
water resistant yes yes yes
battery life 15 hrs 18 hrs 18 hrs
high sensitivity receiver no yes yes
ability to add maps no yes yes
size 3" x 2" x 1" 2" x 6" x 1" 2" x 6" x 1"
Display size 1.4" x 1" 1.5" x 2.2" 1.5" x 2.2"
Display Res. 100 x 64 pixels 160 x 240 160 x 240

ram mounts for GPS

Cradle specific for GPS 60x

Billet Rack

PMB-01-5200 : Promoto Billet, 208-466-4762 ext 1 (Will) located in Napa Idaho

saddle bags

Gas tanks

Folding mirror

handlebar guard



The WR450 headlight is in High beam mode all the time

You can add a switch to move it between High and low beam

The switch part number is 5NG-83976-50-00

Or at it is Part # 44-0338

Here is a wiring diagram picture.


extra lights


Pro Honda HP4M Oil 10W40 ($16.3 on 3/30/10 at Powersports)

Air Filters

($25.46 at PowerSports on 3/30/10)

Handle Bars

Chain and sprockets

Front Sprocket (14 tooth): any steel one ($13.56 on 3/30/10 at PowerSports)

Rear Sprocket (50 tooth): Renthal twin ring ($84.96 on 3/30/10 at Powersports)

chain: DID X-ring (520VM-120 $132.56 on 3/30/10 at PowerSports, $7.61 for Conn Link)

Steering damper

foot pegs

driver footpegs

passenger pegs

I also wanted foot pegs in case a buddy needed a lift. I found them at Baja designs part number 21-0078. There was no picture, but they look like the footpegs for the XR450


Motorcycle parts

If you want turn signals and everything above try buying the Baja Sport kit.

Key ignition

Rumor has it that the key ignition from a TTR125 part number 5HP-82510-00-00 will work on the WR450

I found one at the link below

Baja Designs will sell kit replacement parts (order the key kill switch and brake light and horn separately

call Baja designs at 760-560-2252 to see if the will sell the parts of their dual sport kit for the wr450.

Key Kill switch (replace your kill switch with the Keyed switch below)

Solar panels

AA battery charger

Charges 2 AA batteries in less that 4 hours ($100)

The one below ($70) claims to charge 2 AA batteries in 1 day




Motorcycles of interest

Yammaho WR450F Motorcycle Law question: How do you make a Yamaha WR 450 F street legal? Answer have a C or 3 in the 8th digit of your serial number and your home free.

450EXC KTM : 2008 model is street legal