Topic: EBC Rotors

[SOHC4 Cafe Racer Fan]

Has anyone replaced these with their stockers.  If so: (1) which model number did you use; (2) which model is your bike; and (3) did installation require any work other than a straight swap and bolt on?

I'm thinking about using these on my upcoming K2 build along with AP Calipers.

[SOHC4 Cafe Racer Fan]

bump
anyone?

[Steve F]

A picture or a link would be nice 

[fuzzybutt]

like the ones that dynoman sells?

[scunny]

http://forums.sohc4.net/index.php?topic=51179.msg543860#msg543860

[bucky katt]

i know i'm resurecting an old thread but i didnt want to clutter things up with an uneccesary thread. the page that has these ebc rotors on Dynomans site says they dont offer a rotor to fit the 1969-1976 k bikes, but i thought that all of the single disc sohc 750's used the same rotor. i have a 75 750f rotor on my k4 750 wheel on the fork sliders of unknown vintage, just that theyre newer than the early style on the k0 and not the longer ones on the late sohc f bikes. if i get all the stereo equipment sold this week a rotor is one of the things going into the bike, along with the f2 cam and some other stuff members here are selling. i have emailed dynoman again about this, lets see if i get a reply this time.

here is the statement saying what they do and dont fit


*Note: EBC does not offer a rotor to fit the
1969-76 CB750K models or
1977-78 CB750F2 models

[robe0531]

no 77 and 78 are a little different they stick out a little more toward the fork legs i belive

[bucky katt]

ok but that doesnt explain why all my k components work with the rotor from an f bike

[MCRider]

ok but that doesnt explain why all my k components work with the rotor from an f bike

I emailed EBC directly about this and got the reply that they don't offer a disc for our older Ks. I have a 72K2 and a 75F. The discs look identical except... the 75 F disc is the same thickness as my K discs, but... my K discs have been thinned fairly aggressively.

Could this mean that the only difference is the thickness?

If so the EBC rotor for the 75F would fit our older Ks, just be thinner which is OK. Would like to get confirm on this. EBC simply doesnt' want to put their butt on the line for an old low volume product.

If I was to that point in the build I would almost risk buying the EBC disc to see if it would lash up. If not I'd have to eat a restocking charge to send it back.

[MCRider]

no 77 and 78 are a little different they stick out a little more toward the fork legs i belive

I'd say that is correct. But the EBC rotor is for the 75,76 F which i think is the same as the early Ks, only thinner. But the thickness is why EBC won't say it fits. I think, but not confirmed.

[754]

If they fit a 77/78 K, they should fit all the other year 750s..

[MRieck]

no 77 and 78 are a little different they stick out a little more toward the fork legs i belive

I'd say that is correct. But the EBC rotor is for the 75,76 F which i think is the same as the early Ks, only thinner. But the thickness is why EBC won't say it fits. I think, but not confirmed.

As a side note....EBC does have a replacement rear rotor for the 75/76F

[MCRider]

no 77 and 78 are a little different they stick out a little more toward the fork legs i belive

I'd say that is correct. But the EBC rotor is for the 75,76 F which i think is the same as the early Ks, only thinner. But the thickness is why EBC won't say it fits. I think, but not confirmed.

As a side note....EBC does have a replacement rear rotor for the 75/76F

Which I think is simply the front rotor, isn't it? Too big for me.

[bucky katt]

when i get the extra cash i'm going to order the rotor and if it doesnt work out i bet someone here could use it at a nice discount.

[MCRider]

when i get the extra cash i'm going to order the rotor and if it doesnt work out i bet someone here could use it at a nice discount.

I will need one for the front of my 75 750F, so yes I would likely buy it. Or someone else. The project is a ways off, but I want it to be a one disc front end.

[MRieck]

no 77 and 78 are a little different they stick out a little more toward the fork legs i belive

I'd say that is correct. But the EBC rotor is for the 75,76 F which i think is the same as the early Ks, only thinner. But the thickness is why EBC won't say it fits. I think, but not confirmed.

As a side note....EBC does have a replacement rear rotor for the 75/76F

Which I think is simply the front rotor, isn't it? Too big for me.

    No...the front and rear are different.

[MCRider]

no 77 and 78 are a little different they stick out a little more toward the fork legs i belive

I'd say that is correct. But the EBC rotor is for the 75,76 F which i think is the same as the early Ks, only thinner. But the thickness is why EBC won't say it fits. I think, but not confirmed.

As a side note....EBC does have a replacement rear rotor for the 75/76F

Which I think is simply the front rotor, isn't it? Too big for me.

    No...the front and rear are different.

OK, just wondering. Good to know.

[bucky katt]

well, i have a 75 750f rotor on it now and it works great, so i'm assuming that there is going to be no problems. which is a good thing.

[cb750k77]

here is the pic

[wannabridin]

i have a 76 GL front end, i think they have a direct swap for those that work pretty well.  hows the performance upgrades even on the stock single disc?

[cb750k77]

i never installed one on my bike but i did forsomeone else and they LOVED it stoped really well had a good feel to it deffinetly could tell...

[wannabridin]

this might be a decent alternative to one of fishheads kits.  some SS lines, new pads and rotors and you'll def. be better off.  put the money from drilling the factory rotor into this, and you'll be in business.  a full floating setup will be better than the rigid one anyday too

[MCRider]

this might be a decent alternative to one of fishheads kits.  some SS lines, new pads and rotors and you'll def. be better off.  put the money from drilling the factory rotor into this, and you'll be in business.  a full floating setup will be better than the rigid one anyday too

When I talked to EBC, they said the rotor is 15% more friction than stock. That along with EBC pads (of course), lines and fluid, yields more brake than stock. Maybe an uptick on the MC to top things off.

My FreeBird project has "minimalism" as its theme so one front disc with a fork brace is my goal.

[wannabridin]

ya, i'd rather have better stopping power, but i do like the minimalist theme you'll have!  i'm going to try and route as many wires and lines as i can on my build, just cuz it looks so much better!  so it's either twin EBC discs, or a fishhead kit...  i guess it all depends on bang for my buck!   

[Deltarider]

That EBC rotor would be my choice , certainly over mounting a second disc, in which I don't believe, the more after a member wrote recently he immediately took it off, unhappy with the extra unsprung weight.
http://forums.sohc4.net/index.php?topic=64964.msg712087#msg712087