Rear Brake Disc

[His Dudeness]

I have to get a new rear brake disk. I usually go for Yamaha parts but the OEM disk is £152 plus postage. Bit of a rip off so I'm looking at either an ebc pro-lite for £68.24 plus postage
http://www.demon-tweeks.co.uk/motorcycle/brake-discs/bike/yamaha/1998/fzs600-fazer/ebc-brakes-brake-disc-stainless-rear-rotor

or a brembo one for £78 plus postage
http://www.demon-tweeks.co.uk/motorcycle/brake-discs/bike/yamaha/1998/fzs600-fazer/brembo-replacement-upgrade-disc-rear

Has anyone used either of those discs? Any opinions on them?

[alexanderfitu]

I don't  but maybe a  second hand oem  would  be  good? why is it being changed

[His Dudeness]

It's just worn out. Lots of deep ridges so time for a new one. Don't think I'd risk a second hand one unless I could visually check it before buying it.

[alexanderfitu]

 ah fair enough. it's hard to find a  good part like that second hand online. I would go for the brembo  disk

[darrsi]

@dude i've just checked, and i put a rear Pro-Lite on in Nov.11, BUT i've been using sintered Galfer pads as well that work very well but have pretty much eaten the disc.
That's not saying a softer pad, especially EBC, wouldn't last much much longer.

[darrsi]

I must add, remember i had big issues with my front brakes that have not long been sorted, plus i ride in traffic a lot, so it all adds up to virtual rear disc abuse!!

[His Dudeness]

Ok cheers darrsi. I'm in traffic the whole time too so I'm heavy enough on the rear brake. Doesn't seem like your Pro-lite disc lasted that long then, only about 2 years? Might try the brembo one and see how that lasts.

[darrsi]

One year really, but with a load of circumstances chucked in, i reckon they'll be okay with softer pads

[packie]

@dude i've just checked, and i put a rear Pro-Lite on in Nov.11, BUT i've been using sintered Galfer pads as well that work very well but have pretty much eaten the disc.
That's not saying a softer pad, especially EBC, wouldn't last much much longer.

I've had a few mechanics here warning me against using sintered pads on the rear. One guy is a well know competitive rider here who rides against the likes of Adrian Archibald and owns his own workshop.


@ Dude
I have that EBC disc on the back with standard EBC pads. Threw the same combo on my Bandit 1200 as well. [size=78%]No problems to report so far.[/size]

[His Dudeness]

@dude i've just checked, and i put a rear Pro-Lite on in Nov.11, BUT i've been using sintered Galfer pads as well that work very well but have pretty much eaten the disc.
That's not saying a softer pad, especially EBC, wouldn't last much much longer.

I've had a few mechanics here warning me against using sintered pads on the rear. One guy is a well know competitive rider here who rides against the likes of Adrian Archibald and owns his own workshop.


@ Dude
I have that EBC disc on the back with standard EBC pads. Threw the same combo on my Bandit 1200 as well.[size=78%]No problems to report so far.[/size]

Would you know what sort of mileage or time you've got out of the ebc disc packie?

[darrsi]

Go for the Pro-Lite, they're cheap enough not to worry about, and you can be the next reviewer!
I'm a bad example, but i'm telling it as it is.
The Galfers on the the front are quite good, but i reckon i'll try SBS next time.
As for the rear, they've been shit hot, but at a price.
You just can't win sometimes......

[packie]

Would you know what sort of mileage or time you've got out of the ebc disc packie?

Both are only fairly new on the bike but I expect good mileage and a good few years from both. I would expect them to be in there or there abouts with the originals for wear and tear.


The trick is to keep the sintered pads away from them. No need for them at all. Braid your hose first and fit the standard pads. They have good bite and will be more than up to the task. I'm surprised Darrsi only got a year. He must have been very aggressive along with his sintered pads plus other forces were in play I suspect. My standard rear that came off the Bandit 1200 was still in the spec limit and I had 40K miles up on that in 10 years and that is a buget bike with budget parts. I expect at least 40k too with the EBC but with a shorter lifespan (probably 4 years x 10K miles) as I use the Fazer daily.


I wonder was there a period on Darrsi's bike that maybe his back brake was iffy and slightly siezed and in contact his disc unaware. I have never heard of someone going through a disc in a year unless some abnormal forces were at play. I was driving around town for the best part of a day in low gears with and didn't notice that my back brake was iffy and in contact with the disc. It's only later that I got out on the open road when I hand to wind it on a bit that the bike was being noticeably held back. Junked the caliper in the end for an FZ1000 baby.

[gordon]

hi his dudeness i,v got a new rear disc here cost me £50 if you are still looking for one i,m in manchester

[darrsi]

@packie, my rear caliper's absolutely fine, but i had major juddering problems on the front for ages that totally baffled me so i had a tendency to use the rear way more than i should of.
Combine my weight and the bike's, and sintered pads dragging on the discs trying to stop and you end up with a quickly worn disc.
It's no big surprise at all, and there's no hidden problems that i don't know about.
It's still working fine now, but it won't be long before i'll be looking for a new one, and i'll be using softer pads next time.
The juddering at the front turned out to be a faulty braided brake line.
 

[kebab19]

There are loads of other Yamahas that used the exact same disc as rear brakes; I guess it depends on whether you want to take a risk buying a 2nd hand item. Is it 245mm diameter?

All Bike Engineering list fork & disc measurements & state which discs match using handy lists in .pdf or .doc format
http://www.allbikeengineering.co.uk/discs.php

According to their codes, potential matches appear to be:
XJR400
FZ600
FZR600 89-93
FZR600R 94-95
SRX600
XJ600 Diversion 92-98
YZF600 Thundercat
YZF750SP 93-97
TDM850 91-99
TRX850
TDM900
YZF1000 T'Ace
YZF-R1 98-02
 
 

[packie]

@packie, my rear caliper's absolutely fine, but i had major juddering problems on the front for ages that totally baffled me so i had a tendency to use the rear way more than i should of.
Combine my weight and the bike's, and sintered pads dragging on the discs trying to stop and you end up with a quickly worn disc.
It's no big surprise at all, and there's no hidden problems that i don't know about.
It's still working fine now, but it won't be long before i'll be looking for a new one, and i'll be using softer pads next time.
The juddering at the front turned out to be a faulty braided brake line.

@Darrsi....The "hidden problem" was only an after thought.

The main thing that I was trying to point out to Dude was that your back brake wasn't been ridden in a normal riding condition by you which you did point out to the Dude and which he should take more heed to.

The Dude needs to think about this....you were using the single back disc with a single caliper to do basically the same amount of the work of twin front discs and two excellent front calipers.  If your back brake was getting used more and harder than the front, then basically you are swapping the function of the brakes around. This is abnormal so you got abnormal wear. I have no doubt that you would have done the same to the Brembo. Sintered read pads are a no-no too as they increased the demise of your disc as well. I would suspect also that maybe the rear disc might not be made of the same strength steel as the fronts are, which could also have attributed to your rear's demise. But this is only speculation on my behalf.

Ridden under normal conditions I would expect at least 40k +. How soon you get to 40K is how ofter you ride your bike of course. If you clock up 10k a year which is quite a lot (200 miles a week), you will get about 4 years of wear. As I said earlier, I have 40K up on my Bandit 1200 and that is a way heavier bike than the Fazer and I'm 17st on top of it and use a top box with stuff in it everywhere I go. I have done about 20K of that mileage in touring the continent with a passenger and full luggage (see below) so it has seen it's fair share of usage. But the usage wasn't abnormal. The main power of my brakes came from the front and not the rear. The rear disc have not even wore under the spec yet at 40k and still have a bit of meat on it.

[darrsi]

I've got the same Galfer pads on the front, with wavy Kagizume discs, and they've barely scratched them, and work very well too. 

[packie]

I've got the same Galfer pads on the front, with wavy Kagizume discs, and they've barely scratched them, and work very well too. 

I had a set of Chinese Front Discs on a Bandit 600 with Ferrodo Sintered pads for over 2 1/2 years. Same feedback here....did the job very well and was about half the price of EBC's. Probably should have done the same this time around but I had a few quid burning a holein my pocket! 

But it just goes to show you how much of a load that is being put on a single rear disc with one caliper if you suddenly transfer more of your braking from the front that has two discs and two calipers regarless of what type pads you use.

Also, I'm no engineer, but I feel that when you use mostly a back brake, all the weight is in front of the brake (engine, passenger, and 75% of the bike ect) and it is trying to haul everything back (if you know what I mean), and I think that is a lot harder than the twin discs working in front of everything.

[His Dudeness]

hi his dudeness i,v got a new rear disc here cost me £50 if you are still looking for one i,m in manchester

Hi gordon. What brand is you disc?

There are loads of other Yamahas that used the exact same disc as rear brakes; I guess it depends on whether you want to take a risk buying a 2nd hand item. Is it 245mm diameter?

All Bike Engineering list fork & disc measurements & state which discs match using handy lists in .pdf or .doc format
http://www.allbikeengineering.co.uk/discs.php

According to their codes, potential matches appear to be:
XJR400
FZ600
FZR600 89-93
FZR600R 94-95
SRX600
XJ600 Diversion 92-98
YZF600 Thundercat
YZF750SP 93-97
TDM850 91-99
TRX850
TDM900
YZF1000 T'Ace
YZF-R1 98-02

Thanks kebab. I'll see if I can get part numbers for those bikes. I wonder could the hole pattern for the bolts be different even if the discs are the same size

[darrsi]

Just found this posted on another forum:


"....EBC Pro-lites are good value for money. As Olivier said, don't use sintered pads on them. They'll absolutely destroy the rotors...."


Lesson learned........

[His Dudeness]

Well I finally got a chance to do this job and I've got the old disc off with no major dramas. I'm wondering now if I should use a bit of locktite on the new bolts?

[Lawrence]

Just for information, the following list should fit the FZS600:
 
Front
Cagiva     
FRECCIA C12R  125  1989-1991  Front Right
Ducati     
PASO 907 I.E.  904  1990-1991  Front Left/Right
Moto Guzzi     
DAYTONA IE  1000  1991-1994  Front Left/Right
Yamaha
TZ COMPETITION  125  1996-1997  Front Right
R1-Z  250  1997+  Front Left/Right
TZ GP  250  1996-1997  Front Left/Right
XJR  400  1995-2000  Front Left/Right
FZR  600  1989  Front Left/Right
FZR R  600  1990-1995  Front Left/Right
FZS FAZER  600  1998-2003  Front Left/Right
FZ GENESIS  750  1989-1992  Front Left/Right
TDM  850  1991-2001  Front Left/Right
TRX  850  1995-2000  Front Left/Right
FJ  1200  1990-1993  Front Left/Right

Rear
FZ 400 (4YR1) 96
FZ 400 N (1FK/33M/46X) 85
SRX 400 (1JL/3VN1/3VN2/3VN5) 85/90-96
XJR 400 4HM1/4HM2/4HM4/4HM7 93-96
XJR 400 4HM3/4HM5/4HM6/4HM9/4HMA/4HMB 95-99
FZ 600 87-88
FZR 600 89-93
FZR 600 R 94-95
FZS 600 'Fazer' 98-03
SRX 600 (1JK)/3SX) -85/90-9
SRX 600 86-87
XJ 600 N 95-03
XJ 600 S Diversion 92-03
YZF 600 R Thundercat 96-03
YZF 750 R/SP 93-97
TDM 850 91-01
TRX 850 96-99
TDM 900 P/R/S/T/V/W/X/Y/Z 02-10
TDM 900 AT/AV/AW/AX/AY (ABS) 05-09
YZF 1000 R Thunderace 96-02
 
Gathered from ebay ads   Can't guarantee it's right so don't blame me if you get the wrong disks