TOPIC:

I just recieved a new disk brake for my 440C, its from EBC.

Im not sure im happy with it, if you see the inner circle is not even a nicely machined round shape, is this a problem or am i being "picky"?

I think its done that way to leave extra meat around the bolt holes while lightening the rest of it.

Ok well that have makes sence because it looks like crap symmetrically

Nice looking rotor! Bolt it up and enjoy your new found stopping power!

No eBay APP ID and/or Cert ID defined in Kunena configuration

jsnabbs wrote: I just recieved a new disk brake for my 440C, its from EBC...

Attachment IMG_0436.jpg not found

The disc shown in your above post Is NOT the correct disc for 1981 KZ440-C2 which has 8 rivet holes -- not 7 -- and a different pattern of cooling holes.










The following pic is from an ebay listing:





Good Fortune!

Some of the later wheels (41080-1130) had disks with 7 mounting holes. Those disks mounted directly to the wheel using special screws.

The C model was available in Europe.
I can't see the parts fiche for a 1981 KZ440C, as that was likely not available in the U.S.

But I think Patton is right, I would expect that a 1981 440 wheel would use the 8-rivets disk with a 4-hole carrier. But there is a chance the C model used the later wheels, I guess.

Here it is on an A4 model in the U.S.

You are correct that the 1983 KZ440-A4 had the newer disk, but the brake on his 1981 KZ440 has the 4-bolt carrier with the 8-rivet disk. Here's a pic of his bike. Ed

Ahh, yes, definitely the 8-rivet, 4-hole carrier type.

The disk he got must have been incorrectly listed, and is really only for the later years.

Admittedly not very scientific, but the best pic on hand.



Good Fortune!

Patton wrote: Admittedly not very scientific, but the best pic on hand.

Good Fortune!

Actually, that photo shows the newer style disk with the 7 special shoulder bolts. Note: each bolt lines up with a spoke and there are 7 spokes (though this cannot be seen in that particular photo, but a photo search may show it).

The other give away is that the area with the bolts has a ring of large holes drilled out for weight reduction. Two holes between the bolts. The riveted carrier type does not have the ring of holes.

So maybe he has the wrong wheels, or he has a C1 which maybe uses the rivet-type disk, and the C2 uses the 7-bolt disk.

BTW, this same 8-rivet versus 7-bolt dilemma exists on the 500/550 line as well.

It's easy to see why a disk seller might get confused.