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twoares
04-15-2013, 09:51 AM
Finaly installed my new axle and bearing carrier and noticed the rotor hub sealing surface is completely shot. I checked for new oem but looks like i'm too late for that. Do I check ebay for a used one or will the 450R interchange? What are my options?
Langbolt
04-15-2013, 10:24 AM
Unfortunately HONDA changed the Splines between the 400EX & 450R....It would have been a direct swap if they hadn't!!!

You can look at the AFTERMARKET for a Nice aluminum rotor hub and nut...LSR, Dura-blue, RPM, RAD mfg.....there's lots to choose from

look up 250R Anit-Fade

:devil:
Rich250RRacer
04-15-2013, 07:38 PM
Originally posted by Langbolt
Unfortunately HONDA changed the Splines between the 400EX & 450R....It would have been a direct swap if they hadn't!!!

You can look at the AFTERMARKET for a Nice aluminum rotor hub and nut...LSR, Dura-blue, RPM, RAD mfg.....there's lots to choose from

look up 250R Anit-Fade

:devil:

Rotor hub splines are exactly the same. The OEM nuts and threaded, splined collar are the same. The difference is the 450R is a three bolt disc, the 250R is four.
twoares
04-16-2013, 06:22 AM
So the 450r would work as long as I used the 450 rotor?
Langbolt
04-16-2013, 10:36 AM
Originally posted by Rich250RRacer
Rotor hub splines are exactly the same. The OEM nuts and threaded, splined collar are the same. The difference is the 450R is a three bolt disc, the 250R is four.

That's good to know!!! I see the Part#'s are the same for the nuts'...but the threaded section was different so i assumed it was because of the splines....the 400ex & 450R part# is 43127-HA2-000 and the 250R is 43127-HB9-000

Thanks for the clarification.... :)
Rich250RRacer
04-17-2013, 10:37 PM
Originally posted by Langbolt
That's good to know!!! I see the Part#'s are the same for the nuts'...but the threaded section was different so i assumed it was because of the splines....the 400ex & 450R part# is 43127-HA2-000 and the 250R is 43127-HB9-000

Thanks for the clarification.... :)

I did the first rear brake conversion posted on here about 8 years ago, and you can see I used the 450R disc hub and disc on my 250R axle, along with the 250R threaded collar and nuts.