I'll try to figure out if we have a good chance asap. Well done Pete 
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I'll try to figure out if we have a good chance asap. Well done Pete![]()
take a look at this video i made for an airbox instructional for the 450.
in and out in a minute.
I'll try to figure out if we have a good chance asap. Well done Pete![]()
Measured at last!
First, I couldn't really measure disc outside diameter so I took this off a replacement disc's spec: 276mm.
So the measurements I took, and these are all on the left fork leg:
Axle centre to lower calliper bolt centre: 75mm
Calliper bolts centre to centre: 72mm
Outside of disc including the bracket that sits on top of it to inner side of fork: 35mm
Edge of wheel to inner side of fork: 41mm
Note my completely inaccurate measuring device (steel ruler) as I don't have vernier callipers at the moment unfortunately, so all these measurements may not be 100% accurate, but I'm guessing they should still indicate if your existing brackets will fit.
To fit this swap.. you just need to get a kit from me, some CBR F3 Rotors & Some Kawasaki twinpot pistons.
You can probably budget:
$30 - $50 on calipers depending on rebuild status, Ebay skills (They were used from about 87 up to 97 so it depends what year you get. Al ot of early ones need new pin rubbers although seals are generally ok).
$30 - $40 on brake pads. (I actually got one set of calipers for $30 with a set of useable pads once...)
$50 - $100 on CBR Rotors (depending on your Ebay skills)
$110 - 120 for the brackets, spacers & bolts. Depending on location, how you send the money etc.
Takes probably 3 or 4 hours to do it the first time as you have to re-drill the rotors using a drilling jig etc.
Well worth the money & effort.
The rotors I am using are the same diameter as the 550 rotors... 294mm from memory.
If you look at my bracket posts you'll see Don has been messing with a 550 single disk setup using my bracket, a kawasaki twinpot & a 98 Honda CBR 900RR disk that I supplied him with. That disk has the same offset & PCD as the stock Suzuki but it's a 310mm dia disk. They are very rare though & be aware they are directional so you need a left & a right. A set will likely run you at least $120 on Ebay, maybe more.
That Honda disk is the closest you'll come to a perfect fit on the stock wheel. The centre hole is about 2mm too big so you have to centre it on the bolts. You also have to drill out the bolt holes to 8mm.
If you can work out some brackets to work with your calipers & those disks it would probably be the easiest way to do it.
Can you post a pic of the Calipers? I believe the newest year for the ones that work with my brackets are about 1989 or 1990.
Are they opposed piston type? I would be surprised if they are & there is room. I think there is a more modern caliper that's not opposed on one of the Ninja's... maybe it's one of those. The SV650 also has non-opposed piston calipers.
Dan![]()
Thanks Pete, I think I remember seeing something about drilling but not sure if it was in reference to this, I will have to look after work. My brakes feel pretty good now but I am going to keep this in mind for later, I have to plug a hole in my fuel tank first
I think this quote has the info we need.
Cool that sounds like it, I didn't trawl the thread enough obviously...
I just realised... I have to replace my rotor and disc pads as it stands... hmmmm... I wonder how a custom bracket holding a brake caliper would go for a safety certificate? I will have to do some research...
Hmmmm, never thoight of that, but we have this wonderful "classic" registration for vehicles over 20 years old, takes a bit longer and some photos to get it, but once you have it you don't have to get safety inspections anymore. There is nothing like that in Aus?
That really does! We are lucky in that as long as you ride right, you never get checked for inspectionn here. I have only been caught once in 15 years and i had the bad luck to come upon a seatbelt check and got written up. Better safe than sorry though.
No problem with this sort of mod in the UK MOT system - as long as the brakes can be shown to work to a minimum requirement...