400EX Rear Hubs/Axle Question

[MoparManiac117]

So while I was riding my '07 400EX this weekend, I noticed that there was a hesitation whenever I would give it throttle. Got it brought back in and discovered that the right rear hub was spinning on the axle. Got the hub off and discovered the splines on the hub were just about gone. The axle splines didn't look too good either. So here's my question: what's the best stock length (I'm trying to run XC with this heap but crap keeps breaking) axle you can get? And I figure while I'm replacing the axle, I may as well rebuild the bearing carrier too. Any advice or tricks I need to know? What special tools will I need?

[400man]

that sucks, if it was the left hub (sprocket side) you could weld it to the axle because it never has to come off. that's how mine in. but in this case, I don't know if all aftermarket axles are +1/adjustable inch or stock length? Id say if you could find a good shape used oem axle and new hubs you would be all set. just keep an eye on the hubs and check to see if they are tight.

[LxMxL97]

Tusk makes an axle that has a warranty and it's only like $175

[CJM]

Id keep the stock axle, Ive run them for eons with no issues.

1. Make sure your hub and axle splines are good.
2. Put blue loctite on the nut
3. Put the hub on with an impact gun TIGHT!
4. Cotter pin goes on, trimmed and then you slam the hub home again
5. Periodically (every race or two) check the hubs.

[MoparManiac117]

Id keep the stock axle, Ive run them for eons with no issues.

I can't seem to find a new stock one under $250 and the Tusk one is only $200. Is it just as good of a piece?

[Stickman400]

Tusk is much better than a stock one. It's adjustable and has a lifetime warranty, can't beat it for the price.

[Zakradu398]

Another vote for Tusk. My stock axle would come loose no matter what I did.. Impact, RED loctite, Cotter very tight. Still would come loose.

[MoparManiac117]

So the Tusk axle it is. Now, what about a lock nut? I haven't removed the axle yet but can I reuse the one that's on there now or will it need to be replaced too? If I have to replace it, are the aftermarket ones worth the extra money or is the stock one pretty good?

[CJM]

Hmm just checked ebay and yea its tough to find a used nice one cheap.

I like the stock nut, never had an issue with them. Take some red loctite and use sparingly and it wont come apart.

[LxMxL97]

As for a lock but I think that the lonestar one that also holds the rotor is the best one but they're about $200 I have also used the mod quad locknuts they are cheap and work just as they should

[MoparManiac117]

Couple more things.

The Tusk axle is (I think from what I've found out doing research on it) about 2 inches longer than the stock axle, even adjusted all the way in. Does anyone think this will be a problem for XC?

Bearing carrier: I found a new billet one with twin row bearings in it in eBay for $95. Good deal?

[400man]

I guess you could just flip your wheels around to make them offset inward if its too wide.

[quadmanw]

I use the tusk axle for XC racing and I like it better than stock. I think you'll find that you're quad will be more stable rather than wide.

[602racer]

I've read that 250R axles will fit and there are less splines but hey are bigger and stronger.

[CJM]

I recall maybe that the splines on the tusk axle allowed you to put the spacer, then the hub, then a spacer to make it a bit shorter. I had a tusk and it was ok but if the front isnt wider it will make it push in the corners and in my case on one off camber spot-it made up flip cause the track width was different.