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Front brake rotor question

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Old Nov 19, 2019 | 08:22 AM
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Default Front brake rotor question

I have looked but I cant find the answer to this question.

Will a 2009 Ultra front brake rotors work/ fit to a 2004 Electra Glide front brakes? I have a 2004 Electra Glide standard and my front brake rotors are wrapped and the 2009 Ultra front brake rotors are available local for cheap as a replacement.


Thank you,

Lawrence
 
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Old Nov 19, 2019 | 10:11 AM
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Yes. If they are stock, then they are the same part. Also, the part numbers are stamped on the disks.

This usually happens when a clueless rookie changes the tire. ( )

 
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Old Nov 19, 2019 | 10:25 AM
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You can check the part numbers for comparison here

http://partsfinder.onlinemicrofiche....20BRAKE%20DISK

http://partsfinder.onlinemicrofiche....20BRAKE%20DISK
 
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Old Nov 19, 2019 | 12:53 PM
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If the 2009 had the newer Brembo brakes (which it should have) then the rotors are larger in diameter than your 2004.

When I upgraded my 02 RG to the newer brakes, I had to get the netwer compatble rotors.
 

Last edited by 99Birdman; Nov 19, 2019 at 12:54 PM.
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Old Nov 19, 2019 | 01:14 PM
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The part numbers are on the disks. Prolly not Brembo, just standard HD disks. The same front and rear disks are used on almost all TCs
 
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Old Nov 19, 2019 | 01:25 PM
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Part numbers for 04 front rotors: 44136-00 and 44156-00

Part number for 09 front rotors: 41808-08A and 41809-08A

'04 (up to '07) have 11.5" diameter rotors

'08 and newer have 11.8" diameter rotors

I';ve never tried it but, I would bet, if you put '09 rotors on an '04 with stock '04 calipers, you would not be able to mount the calipers.
 

Last edited by 99Birdman; Nov 19, 2019 at 01:27 PM.
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Old Nov 19, 2019 | 01:31 PM
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I have an 07 Touring, 08 and up have brembo brakes so the rotor is a larger diameter and will not fit. I have no clue about newer non touring bikes. My rotors are slightly warped as well and even if I could find a set off of an 07 or older, what kind of shape would they be in (19 yrs or older)
 
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Old Nov 19, 2019 | 01:49 PM
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SInce you have to replace the rotors anyway, now would be a great time to upgrade to the Brembos (and use the rotors you found). I was able to find a set of new calipers on eBay for around $70.

The difference in performance between the '07 and down vs the Brembos is night and day..
 
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Old Nov 19, 2019 | 03:55 PM
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Originally Posted by 99Birdman
SInce you have to replace the rotors anyway, now would be a great time to upgrade to the Brembos (and use the rotors you found). I was able to find a set of new calipers on eBay for around $70.

The difference in performance between the '07 and down vs the Brembos is night and day..
I believe you need to replace the Master Cyl as well
 
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Old Nov 19, 2019 | 03:58 PM
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Originally Posted by roussfam
I believe you need to replace the Master Cyl as well
Nope, they're both dual disk so the master cylinder volume is the same. Since I was able to get unused calipers, i didn't even need to flush any fluids. I don't have ABS so, I stayed with the DOT5 my '02 calls for. Bolted on the new rotors and calipers (upgraded to EBC pads), bled the brakes, and rode.

40,000 m since the upgrade and everything is great.
 

Last edited by 99Birdman; Nov 19, 2019 at 04:00 PM.
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