Twinpot Brake upgrade on 78 Skunk

[Chuck78]

Comprehensive list of caliper and rotor candidates

Comprehensive list of caliper and rotor candidates

I had been putting together a list of all possible candidates for rotors for the Tokico twinpot caliper swap, so I thought I'd share this info that I've gathered from all over the internet. Some of the sources may not be 100% accurate, so check measurements/photos before handing over any cash, but hope this will help out those searching for parts.

A few of the 296mm rotors have a 21.5/22/23mm offset already, but they are almost impossible to find used, where as the 74mm pcd 296mm rotors are readily available for $75 give or take used. If you have luck finding them, I think the 78mm PCD 296's will be the easiest to drill out accurately using my drill press method of aligning with drill bit of existing hole size, clamping down, swapping to ~8mm-ish drill bit.

I have also listed a few 310mm rotors, which are also useable, as the Tokico twinpot calipers' pads are skinnier than the friction surface height of any of these Honda rotors, but with the 310, you will have about 4mm of excess rotor on the outside that is unused. by slightly angling the caliper, you can get a full sweep over the drilled area of the rotors. This all takes custom modifications to the brackets or different custom adapters, or just use a dremel and grind off the edge of the pad that will hang over 1mm on the single disc application. The 78mm PCD 296mm rotors with Salty's kit is by far the most painless setup.

Here is a fairly comprehensive list, please check all info:
Suzuki GS 2-piston caliper dual brake mod parts

MASTER CYLINDER:
must use 5/8" / 16mm dual disc brake master cylinder & lever
CALIPERS:
Notes from EBC FA129 front brake pad fitment + additional)

1988-2007 Kawasaki EX250F Ninja 250R
EX500A 1987-93
EX500D Ninja 500R 1994-04
1987-1993 Kawasaki EX500A
1994-2004 Kawasaki EX500D(?)
1994-1996 Kawasaki EX500 Ninja 500
1997-2009 Kawasaki EX500 Ninja 500R Frt. Right
1994-2006 Kawasaki ZG1000 Concours dual disc
1996-1997 Kawasaki ZL600B Eliminator (95-98?)
1990-1993 Kawasaki ZR550 Zephyr dual disc
1991-1992 Kawasaki ZR750C Zephyr dual disc
1988-1990 Kawasaki ZX1000 Ninja ZX-10 dual disc
1988-1996 Kawasaki ZX600 Ninja 600R dual disc
1987-1990 Kawasaki ZX750F Ninja 750R dual disc

1998 ZX-6E
1993-1995 ZX7
1995-1996 Kawasaki ZX9
1994-2004 Kawasaki ZG1000A Concours (94-06?)
1993-2001 ZX11

1991-1993 Suzuki GSF400 Bandit Front
1991-1993 Suzuki GSX1100G dual disc
1989-1995 Suzuki GS500 Front Right
1990-1993 Suzuki VX800 Front



296mm DUAL ROTORS: (Make sure you get the Non-ABS version rotors)


(*78MM PCD - BUT JUST NEED TO ENLARGE BOLT HOLES)
***MD1014X / XC / CC & VR1014BLK / BLU / RED***
296mm 62.2 center 17.2 offset 78mm PCD
to fit:
98-09 VFR800
99-00 CBR600F4
93-94 CBR900RR Fireblade
08 XL1000 VA8 Varadero (Canada)
97-03 GL1500C/CT Valkyrie (all models)
00-03 GL1500CF/CD Valkyrie touring (all models)
01-17 GL1800/1800A Goldwing (all models)
99-00 CBR600F4 (not F4I)



***OEM only, no EBC aftermarket available, only Chinese or MetalGear.com.au ***
CB1 400 1989-1990 EDIT - CB1's are single 310mm 74pcd 20mm offset
CB400 FOUR 1997-2000 (non-USA only?)
CB400 SUPER BOL D'OR 2005 (non-USA only?)
CB400 SUPER FOUR 2005 (non-USA only?)
CB400SF 2002-2004 (92-97?) (non-USA only?)
CB600F "599" HORNET 1998-1999 (USA & international) (a good used score but not common, 2yrs only, no EBC aftermarket available)
Outer Diameter: 296mm
Inside Diameter: 62mm
Bolt Circle Diameter: 78mm
Bolt Hole Diameter: 6.4mm
Bolts:6
Disc Thickness: 5mm
Total Thickness (width/offset): 23mm (NOTE - THESE ARE SAME HEIGHT/OFFSET AS OUR STOCK GS ROTORS, DO NOT NEED 5mm HUB SPACERS or speedo drive sheetmetal dust cap modifications required on some GS models)
"Arashi" Brand DBS007MB Chinese aftermarket in fancy packaging and cloned Arai helmets logo...


(*REDRILL NEW BOLT PATTERN TO USE THESE 74MM PCD ROTORS)
***EBC # MD1139***
Honda CB600 F/S-Y,1,2,3,4,5,6 HORNET 2000-2006
OD:296MM
ID:58MM
THICKNESS:5MM
NO OF HOLES:6
BOLT PATTERN:74MM
HOLE SIZE:6.4MM
HEIGHT:23.5MM

(*REDRILL NEW BOLT PATTERN TO USE THESE 74MM PCD ROTORS)
***EBC # MD1003X / XC / CC & VR1003BLK / BLU / RED***
296mm 58mm center 17.2mm offset 74mm PCD
94-97 CBR900RR Fireblade
95-98 CBR600RR F3
94-97 VFR-750 (non-ABS only)
98-05 VTR 1000 F Superhawk
88-02 Honda RS250
88-07 Honda RS125 (single disc, right rotor only)



310mm SINGLE DISC GS FORK & MODIFIED ALTERNATE/CUSTOM BRACKET DUAL ROTORS: (Make sure you get the Non-ABS version rotors)


***EBC # MD1134X / XC / CC / BLK***
CBR900RRW/X 98/99
310mm (dual 310's needs different/custom made adapter bracket from the 296's, or can use a single 310 on a single disc left fork leg also or on GS500 forks with GS500 caliper & older GS model non-GS500 wheels)
62mm
78mm
6 - 6.5mm holes
4.5mm
21.0mm
CBR900 RR-W,X Fireblade Front 98-99 Model: ZC 923
Disc Outer Diameter: 310 mm
Disc Inside Diameter: 62 mm
Disc Thickness: 5 mm
Number of Holes: 6
Bolt hole Diameter: 6.4 mm
Boltpattern Diameter: 78 mm
Offset: 21.5 mm


***EBC #MD1120X / XC & VR1120BLK***
Outside diameter: 310 mm (needs different adapter bracket from the 296's, can use a single 310 on a single disc left fork leg also)
Inside diameter: 58 mm
Thickness: 5 mm
Number of Holes: 6
Diameter: 6.5 mm
Bolt pattern: 74 mm
Offset: 22 mm
Honda RVF750 RR 94-98 ????? (or is this only EBC # MD1012LS / RS ????)
Honda CBR1100 XX-V,W Blackbird 97-98 EBC # MD1120X


***EBC # MD1136X / XC & VR1136BLK / BLU / RED***
99-03 Blackbird
62mm bore, 78mm PCD and 18.5mm offset - different hub spacer needed? or else shim caliper inboard ? and use custom bracket for GS dual disc applications,but works similarly on GS single disc applications with OEM fork or GS500 fork on older GS)

 

[salty_monk]

Good info, thanks for posting that.

I have picked up a couple of sets of rotors & calipers for anyone who wants to get a full set.

Down to about the last half dozen or so sets of brackets.

 

[jeffasaurus2]

Awesome thread and a fantastic service!

Wondering if there is an official say on whether this will work with the 450's or not. I'm interested in doing the CBR rotor and twinpot caliper as a single disc set-up to avoid replacing the forks.

Any ideas? What would a single side set-up run me for the hub spacer, caliper mount/spacer? (Assuming that this will even be bolt on for the 450)

 

[salty_monk]

It's not been tried as yet but the prelim work I have done with Pete in Australia suggests that it will fit...

You can be the guinea pig if I have an odd bracket if you like. I am really low on sets of this stuff now.

 

[jeffasaurus2]

Super speedy response! Sent you a PM.

 

[jfman]

I had bought a kit just for that but then this happened...

 

[jeffasaurus2]

Dang, that looks awesome. Any info on the swap? What forks/head/triples are you utilizing? Shoot me a PM if you would?

 

[jfman]

Just search my posts and youll find a build thread in there somewhere.

I can sell you the kit I got from salty monk if hes out.

 

[tkent02]

Those brakes are great on an 1100, they would kick ass on a 450.

 

[T8erbug]

With the CBR rotors bolted straight up (no spacers) to a GS wheel what is the rotor to rotor spacing? I figure the answer is somewhere in the thread already but after reading through about half of it I figured it may just be faster to ask. Thanks in advance for a reply!

 

[salty_monk]

I think the CBR Rotors are 16mm offset from memory...

 

[8ball]

Did you ever get a kit made for an early 550? Or would the kit work, as is?

 

[Chuck78]

If it's dual front disc, I think it will be just like all the others upgrading to the twinpot setup.

Single disc early 550 will require different bracket angle and location, and you can then fit larger rotors on - 310mm is a decent fit.

 

[bwanna]

Did you ever get a kit made for an early 550? Or would the kit work, as is?

I have a very nice Chrome Twin-pot Brake Caliper that might work. It's been fully rebuilt and comes with new pads. Looking to get $45 + shipping. Let me know if you're interested.

 

[8ball]

I have a very nice Chrome Twin-pot Brake Caliper that might work. It's been fully rebuilt and comes with new pads. Looking to get $45 + shipping. Let me know if you're interested.

Thanks, but I am wanting to go from a single to a dual disc set up. Getting the brake components isn't the issue, at the moment. It is the spacer and bracket kit that I am asking about. I don't have access to an end mill or lathe so fabricating those parts by hand is not as ideal as having them machined.

I can get a set of forks from an 82 GS550M, fairly cheap, and want to know if the Salty_Monk kit would bolt up.

I guess I would need to go ahead and get the forks to figure out if the caliper bosses are in the same location.

 

[salty_monk]

I think it will work. If the 550sm has the smaller 264mm? ( from memory) rotors rather than 295mm rotors then it should do....

The 650g fork legs work in the 550 triples as well.

If I remember correctly I have one set of the original aluminum brackets left (used) only now...

I guess I can have more made if there's demand.

 

[8ball]

Thanks. I found a set of 82 550M forks, and was able to get the rotors and calipers with it. Everything should bolt up. I will see how that works, first. The calipers wont be as good as the twin pots, but they should be a lot better than the single disk.

 

[Brodie]

Hey Salt, do you still have any of these kits? I have a GS750B and think I am going to need a bit more than a single rotor single pot to stop me.

Postage to Aus will be the killer in the price I guess. Cheers, Brodie.

 

[salty_monk]

You'll have to change your fork legs for it to work... Postage to Oz is not so bad. $40 or so from memory.
I only have 1 set left, it's used & Aluminium not the later steel sets.
Trying to gauge demand to see if I should get more cut...

 

[Brodie]

Hmm, I know I will need a new right fork leg, thought the other would be ok.
I don't mind that is is used, but what would be the advantage of the steel. Wouldn't the aluminium hold up just as well?