[bigchu420]

I have my old XE (totalled) and my newer SE-R.

Can I use the front brakes from my old XE to replace the tiny disks on the rear of my SE-R?

 

[HATEnFATE]

Thats a really good question but I wouldn't think so because of the thickness of the front rotor.
The front rotor on your XE is vented and the rear on your SE-R is a solid disc. Probably wont fit. Also your Hubs are larger on your SE-R then they are on your XE so the disc wont fit over the hub.

 

[sno]

the hubs should be the same.

i don't think you'd be able to get the front calipers to mount up correctly on the rear of your se-r. unless you were able to make a custom bracket.