are disc brakes universal?

[Kwakki Si]

Prior to my recent post about having a warped disc brake my friend has found some in he's garadge and hopefully they will fit... If they fit am i good to go or do i need a specific type of disc for my bike or are they universal?
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MOD1 passed 26/01/12... MOD2 passed 08/02/12
My current ride: ZX6R NINJA G2, The GREEEEN one!
Is it a bird? Is it a plane? No, it's a mother fucking motorbike!

[Easter Bunny]

Its a bit like saying I found this old wheel in the shed, will it fit my bike?

If its the right one....Yes

likely? No!
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The light at the end of the tunnel is an oncoming train!

[P.addy]

Usually bike specific, but can be across a range from same manufacturer.

Likelihood, no.

[Kwakki Si]

so if it fits then it should be ok? or should i steer well clear?
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MOD1 passed 26/01/12... MOD2 passed 08/02/12
My current ride: ZX6R NINJA G2, The GREEEEN one!
Is it a bird? Is it a plane? No, it's a mother fucking motorbike!

[truslack]

Yes, of course a brake disk off a CG125 is IDENTICAL to your Ninja 600. If your mate can't find some, just drill holes in the right place on a roses tin lid and bolt that on.

On a serious note, if the disks he has are off a G model Ninja, then yeah, use them. If they're off anything else, don't fit them unless you can guarantee they share the part.
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Current: Suzuki RG 125 Gamma, Honda H100, Triumph Tiger 800XC, Suzuki SV650 (minitwin)

[Rogerborg]

Yeah, go for it. Worst case, you can always just put your feet down to stop, it's not like you're on a proper litre bike.















https://i0.kym-cdn.com/photos/images/original/000/175/315/PicardDoubleFacepalm-1.jpg?1316330080
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Pete.]

Four things need to match.

ID of the hub
Bolt pattern
Diameter
Off-set

If these all match it'll fit.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good