KDX vs KX wheel for fork swap

[Red_Rooster]

Ive read all the talk about needing to swap the wheel, or machine a new axle as part of the kx fork conversion. I think there may be a 3rd option. I havent done this, and propose this merely as an idea.

Here in Phoenix, there are several bearing supply houses. I dont buy bearings, or seals from the dealer, as they are overpriced. I saved over 50% by using these bearings vs the honda bearings on my last swingarm rebuild on my XR. the factory bearings had the same part numbers stamped into the race, as the new ones I purchased, so they were EXACTLY the same...So, I get them there.

Anyway, why couldnt you simply get a new bearing that will fit the wheel, yet has the correct inner diameter for the KX axle? That would typically be cheaper than a complete wheel? any comments? Ill gladly step down if this is a stupid idea....

 

[m0rie]

If you can find a bearing that will fit that would be an excellent option. However everybody that has looked so far hasn't turned up a combo that would work. Let us know if you find the magic combo!

 

[glad2ride]

What you describe is using a KDX wheel (same OD wheel bearing) with a KX axle, requiring a fairly larger ID bearing. There is not much space left for the roller ball bearings.

 

[pete fry]

Definately a question for a bearing shop.Save alot of hassle and money if it works.If the bearings are physically bigger is there enough meat in a KDX hub to be skimmed out on a big lathe?? bearings and hub work if possible would be a cheaper route over complete front wheel.

 

[glad2ride]

For most years, KX bearings are 37mm or 40mm OD, and KDX is 35mm. If you can get it spaced out properly, plus someone to have a large enough lathe to chuck up a hub and wok on it, plus new bearings and seals, then you will be doing great.

 

[nmilne]

What is the KX front axel diameter? Has it changed over the years?

 

[Brettsauto]

there is not enough material in the KDX hub to machine out to fit the smallest O.D. bearing available that will fit the KX axle.

 

[nmilne]

What size is the KX axle though? I'd be interested to know how close it would be to bolting up to my 20mm front axle motard wheel...

 

[glad2ride]

I don't know the axle sizes off the top of my head, but if you look at www.pivotworks.com, you can figure it out from the specifications of their KX front wheel bearing kits.