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147 posts in this topic

This is a question that gets asked often but there's never really been a comprehensive reference for the info. The info here applies to hubs from any YZ model used in a YZ400/426/450. Thanks to Bob Russell at RTR Precision Wheel Lacing for helping collect this.

Here's how it works out:

Front Wheels:

The front hub is the same from 1997 to 2001. Uses 20mm bearings. It can be identified by the four cast reinforcement ribs running across the hub.

2002 and up use the same hub. This hub also uses 20mm bearings. It is smooth across the center, with no ribs, and has a larger diameter at that point.

Early Front hubs can be used on 2002 and up by using the 2001 spacers . 2002 hub can be used on earlier bikes by using 2002 and up spacers.

This information applies to all YZ models from 125-450F.

Rear Wheels:

1998 and earlier use the same rear hub, casting number 2VN00 on the hub. Uses 20mm bearings. These will not fit 1999 and later bikes because the axle is too small.

1999 and up use the same rear hub, casting number 5ET. Use 22mm bearings. Any of these can be used in any '99-'08 model by using the spacers from the year model bike the wheel will be used in. There are four different sets of these, each matching up with a change in the swing arm. You need two for each wheel. They're the same on both sides:

1999-2001 (5ET-25383-00-00)

2002 (5NY-25383-00-00)

2003-2005 (5UN-25383-00-00)

2006-2008 (5TJ-2530S-80-00)

Rear wheels from 125's and 250F's have a 1.85" wide rim. All others have a 2.15" wide rims.

Use the spacers that match the year of the bike the wheel will be fit to, and any '99 or later rear wheel will work on any '99 or later YZF.

Some have asked about the fact that the drive side bearing and seal on the '06 up hubs are different than the brake side, or than the bearings on earlier hubs. The bearings are the same dimensions as the earlier hubs, however, and have no bearing (pun unintentional) on their interchangeability with other YZ rear wheels.

Bearing info for '97-up front wheels, and '99-'08 rear wheels:

Front - 6904-2RS - 20mm ID x 37mm OD x 9mm

Right Rear - 60/22-2RS - 22mm ID x 44mm OD x 12mm

Left Rear - 62/22-2RS - 22mm ID x 50mm OD x 14mm

This information applies to rear wheels from YZ and WR models. YZ fronts will fit WR's, but will not drive the odometer, and YZ spacers must be used.

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You are a mind reader! I was just going to post a question if my 2002 yz250 rear wheel will work on my 2007 yz450f!!! Now it is answered. Thanks

Toby

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This is a question that gets asked often but there's never really been a comprehensive reference for the info. The info here applies to hubs from any YZ model used in a YZ400/426/450. Thanks to Bob Russell at RTR Precision Wheel Lacing for helping collect this.

Here's how it works out:

Front Wheels:

The front hub is the same from 1997 to 2001. Uses 20mm bearings. It can be identified by the four cast reinforcement ribs running across the hub.

2002 and up use the same hub. This hub also uses 20mm bearings. It is smooth across the center, with no ribs, and has a larger diameter at that point.

Early Front hubs can be used on 2002 and up by using the 2001 spacers . 2002 hub can be used on earlier bikes by using 2002 and up spacers.

Rear Wheels:

1998 and earlier use the same rear hub, casting number 2VN00 on the hub. Uses 20mm bearings. These will not fit 1999 and later bikes because the axle is too small.

1999 and up use the same rear hub, casting number 5ET. Use 22mm bearings. Any of these can be used in any '99-'08 model by using the spacers from the year model bike the wheel will be used in. There are four different sets of these, each matching up with a change in the swing arm:

1999-2001 (5ET-25383-00-00)

2002 (5NY-25383-00-00)

2003-2005 (5UN-25383-00-00)

2006-2008 (5TJ-2530S-80-00)

Use the spacers that match the year of the bike the wheel will be fit to, and any '99 or later rear wheel will work on any '99 or later YZF.

Some have asked about the fact that the drive side bearing and seal on the '06 up hubs are different than the brake side, or than the bearings on earlier hubs. The bearings are the same dimensions as the earlier hubs, however, and have no bearing (pun unintentional) on their interchangeability with other YZ rear wheels.

Correct, and for a lesser known fact: the '98 and earlier rear hubs have the same spacing from the center to the sprocket and from the center to the disk. If you really wanted to make one fit a later model, you can go to a bearing shop and buy bearings and seals that will fit the larger diameter axle, and use the center tube from the later hubs. I haven't checked if the newer spacers will work with this set up (though in theory they should), but you can make up some spacers on a lathe.

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I just went through all of this on SMJunky, and a guy named "Whaler" helped me find a brg to fit the 22mm axle and the 42mm hub... you need to go to, of all places, unicycle.com . Here is a quote from him.

Whaler... "How about something a little closer to home for you... like Calgary...

http://unicycle.cc/index.php?main_pa...roducts_id=178

You need the "ISIS" bearings...

At $8 a pair you can't lose....

For what it's worth even if the bearings are only rated at ABEC-1 they would still be plenty good enough for a motorcycle. The only problem I can see with a unicycle bearing is the bike may want to wheelie more, to get back to it's unicycle roots..."

I did get a message back from a fellow at the website and here is what he gave me...

Hello Jamie

I don't know whether these bearings are designed for your intended use. You can obtain them from our sister shop in the USA: http://www.unicycle.com/shopping/shopexd.asp?id=1015 for $8 each. If they turn out to be unsuitable then you've not wasted a huge amount of money...

Keep it wheel!

Tony Melton

If you check out the link directly above, you will see a pic of the brg....

Jamie

www.unicycle.co.nz

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Can anybody tell me what the OD of the YZF bearings are? I'm trying to fit my 01 YZ426 wheel to my DRZ400. I know I need 20mm ID but don't trust my measurements for the OD.

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The YZ bearings are 44mm OD. You are probably better off to get a couple of new spacers made that will slip into the 22mm bearing to reduce the 22mm bearing to 20mm. Did you look at the spacing from the disc flange to the sprocket flange ??? If these measurements are not close to the same, you will have alignment problems. Just a thought, WD

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The spacing between disk and sprocket looks good. The disc is much smaller on the DRZ though and the patterns are different so looks like more work than I was expecting.

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Does this info apply to the 2-stroke models as well, for putting a 2-stroke wheel on a YZ426F??
Yes it does.

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03 yz450 has a-

-98 front hub with 17 inch wheel on it-wheel was from my previously built yz400 for SM

-03 stock rear hub and a 17 inch wheel

Supermoto is bada$$....

so I dont have dirt wheels and started searching for some

I found a $25 '97 YZ250 2 stroke' wheel on craigs list....got it all cleaned up and its a no go.

-In short the ID of the bearing is too small (approx 17mm)...

-The OD of this (now mystery) yamaha front wheel seems slightly smaller than the 98 wheel that works....

-I was thinking I could buy '98 yz400' bearings and it would be good to go but I dont think the bearings interchange in the hubs

The hub that works is cast 140. The hub that I have to use is cast 145...

Is their a bearing that will make this work? I have very little money into it and would love to just buy some bearings and be done...

I can get OD and IDs if it helps...I might just do that anyway...

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03 yz450 has a-

-98 front hub with 17 inch wheel on it-wheel was from my previously built yz400 for SM

-03 stock rear hub and a 17 inch wheel

Supermoto is bada$$....

so I dont have dirt wheels and started searching for some

I found a $25 '97 YZ250 2 stroke' wheel on craigs list....got it all cleaned up and its a no go.

-In short the ID of the bearing is too small (approx 17mm)...

-The OD of this (now mystery) yamaha front wheel seems slightly smaller than the 98 wheel that works....

-I was thinking I could buy '98 yz400' bearings and it would be good to go but I dont think the bearings interchange in the hubs

The hub that works is cast 140. The hub that I have to use is cast 145...

Is their a bearing that will make this work? I have very little money into it and would love to just buy some bearings and be done...

I can get OD and IDs if it helps...I might just do that anyway...

Just measure the outside diameter and width of the bearing, go to a bearing supplier and buy a bearing with the outside diameter of the 97 bearing and the inside diameter of the 98 bearing. You may need wheel spacers made if the hub is not the same width as the 98 hub.

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Iv done a few internet searches and went to napa. I found one bearing that will work (35mm OD x 20mm ID) but its a radial bearing (needle)..that should be OK huh?

The width is 6mm wider(16mm total) but because the bearing is sealed I wont need to add a seal so ill have more room for the wider bearing....

EDIT-the wheel I am trying to make work is 89-95 yz250 so its even older then the late 90s wheel that will work....so ill be looking for a new wheel...anybody wanna trade?

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Would anyone happen to know what honda uses for wheels? reason i ask is i have a wheel and tire off a 1991 CR 500. I was wondering if i would be lucky enough to have it fit a 06 or newer yz, or if it would fit any of the newer CR450's.

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If you mean a 125 front on a 4**, then yes, all YZ fronts are the same within the year model sets.

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Can I put my 07 WR450's front wheel on my 07 YZ450?

I have a race this Saturday and I would like to take two different front tires in case it rains. Having the second tire already fitted on my WR's rim will save a me a lot of time and effort at the track!

Looking at the parts list it looks like the bearings, spacers, axel are the same. The hub and rim have slightly different part numbers and I am not sure whetehr the difference is significant or not. I would hate to take a soil sample when asking a simple question could avoid it! Thanks

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The only difference is the speedo drive. If that doesn't cause a problem, it's the same otherwise.

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