Author Topic: 1981 cb650 front brakes  (Read 1054 times)

0 Members and 1 Guest are viewing this topic.

Offline andyw

  • Full Member
  • *
  • Posts: 3
1981 cb650 front brakes
« on: July 10, 2017, 05:43:17 AM »
Hello all
I need a pair of brake calipers for my 1981 cb650 but can't find any.
will the calipers off another model fit ?

Offline PlungerWaffle

  • Full Member
  • *
  • Posts: 65
Re: 1981 cb650 front brakes
« Reply #1 on: July 10, 2017, 02:02:21 PM »
not sure, I think you have to use something off a 650 between the years of 79-81 if you want to stay stock

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,556
  • SOHC/4 Member #1235
Re: 1981 cb650 front brakes
« Reply #2 on: July 10, 2017, 04:42:37 PM »
not sure, I think you have to use something off a 650 between the years of 79-81 if you want to stay stock

I think you can go from 1979-82 for a CB650.  I am not sure if other models' calipers are compatible.  The brake rotors appear to be different from CB550/750K&F;GL1000 models.

Only the 1981 and 1982 CB650SC models featured twin rotor/calipers up front.
« Last Edit: July 10, 2017, 04:44:37 PM by SOHC4 Cafe Racer Fan »
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 17,649
  • Humboldt, AZ
Re: 1981 cb650 front brakes
« Reply #3 on: July 10, 2017, 09:57:57 PM »
The twin piston calipers themselves were used on a ton of early '80s Honda's, but the caliper-to-fork mounting brackets varied from model to model. What is wrong with yours, Andy?
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline scunny

  • Old Timer
  • ******
  • Posts: 4,613
  • don't call me expert
Re: 1981 cb650 front brakes
« Reply #4 on: July 11, 2017, 12:02:34 AM »
single piston calipers on my 1979/1980 650, has an A and B side for the mounts and body.
past-cb100,ts250,cb500,cb500,gs1000,gs650g.phillips traveller
present-CB 650 retro
            VTR1000F3
           XL250S riverbed rocket
           TS250[sold]
           TS185[sold]
           XL125S[sold]
           MT50 (white)
           MT50 (red)[sold]
           KN250/XS400 project
           XR/XL250 bitsa under construction
           SL100[sold]
           XL250R
           pedal(pub bike) leaks oil
my gallery http://gallery.sohc4.net/members/personal/scunny

Offline cb650

  • Old Timer
  • ******
  • Posts: 3,863
Re: 1981 cb650 front brakes
« Reply #5 on: July 11, 2017, 03:36:13 AM »
I assume a 81 custom.    Kind of a one year only.   The 80 and 79 used a single but should be the same left.   In 82 they went to the dual piston double on the nitehawk.  I'm sure some of the dohc4 750s used the same setup as the 650.
18 grand and 18 miles dont make you a biker

Offline andyw

  • Full Member
  • *
  • Posts: 3
Re: 1981 cb650 front brakes
« Reply #6 on: July 28, 2017, 12:04:19 PM »
they are single piston calipers, ive managed to find a left hand one but can't find the right hand side one.
the calipers off the 650c nighthawk have different brackets