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FZR1000 Front Wheel. Cant Get Brake Discs!

Started by bil2on, July 29, 2025, 04:00:22 AM

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bil2on

I have a FZR1000 front wheel to put on my FJ but realised today I will need to fit FZR discs to it. Unfortunately all FZR discs available to buy are 320mm. No good!

The FZR front wheel is a common modification so can anyone share where I may find 295-300mm discs to fit?

Any other bikes compatable with it? They're 6 bolt and 80mm PCD fitment.




captaudi

Stock 89-93 Non-ABS discs are correct. I have the FZR1000 3.5" front wheel, been running a pair of used 89 discs for years. Factory Yamaha pads are kind to the rotors with excellent performance.

HTH

Daniel
93 FJ1200 FZR1000 wheels, Vance and Hines SS2R, Hank Scott jets R1 Monoblocks. Cartridge forks in the works.

1985 RZ350 couple mods

1977 R100S restoration in process

1972 Porsche 914 for days I feel like being left stranded.

aviationfred

Many FJ owners have installed these rotors with very positive results.

https://ebay.us/m/MwTwzg



Fred
I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2023 Moto Morini X-Cape 650
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1200 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Streetfighter
1985 VF500F RC31 Interceptor

FJmonkey

Quote from: aviationfred on Yesterday at 04:26:50 PMMany FJ owners have installed these rotors with very positive results.
https://ebay.us/m/MwTwzg
Fred

I second that, when bedding in the Arashi rotors I heard a slight growl under harder braking. Once the pads bedded in, they are smooth and quiet. 
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

bil2on

thank you. I got some discs but next problem.... The FJ has a speedo thing one side so no problem there but on the right the round plate (ABS bracket??) will no longer fit and fill the space. How did you guys over come this?

https://imgpile.com/p/QNWMEkg

I can cut out the centre section I guess. On the FJ the whole thing sits inside the centre bore of the disc.

FJmonkey

I am sure the ABS crowd has solved this problem. No ABS on my 86 or 89.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

MarioR

Quote from: bil2on on July 29, 2025, 04:00:22 AMI have a FZR1000 front wheel to put on my FJ but realised today I will need to fit FZR discs to it. Unfortunately all FZR discs available to buy are 320mm. No good!

The FZR front wheel is a common modification so can anyone share where I may find 295-300mm discs to fit?

Any other bikes compatable with it? They're 6 bolt and 80mm PCD fitment.

What's wrong with 320mm rotors?


It does not matter how slowly I go as long as I do not stop.

Pat Conlon

Quote from: MarioR on Today at 08:54:49 AMWhat's wrong with 320mm rotors?



The rotor size is dictated by the location of the caliper mounting lugs on the forks. ****
320mm rotors are too big for the caliper mount locations on the FJ forks.

*** Exception: There are custom plates made for altering the brake caliper locations.
http://www.exactrep.com/acatalog/Front-Hanger-Brackets--pair--12B.html#SID=22

Re: ABS. When you remove the ABS plate you replace it with the non-ABS stock FJ wheel spacer.
Still available from Yamaha: https://www.partzilla.com/product/yamaha/90387-15550-00
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3