Brake discs GL1000

[ianstaley]

So I have 2 sets of discs, one set is off my own bike, and the conform to dimensions below front and back. Anyone have any idea as to any other honda disc that has the same dimensions as mine are on the limit (thickness) and the other set are not off a GL1000. if they are then I have no idea which year mine is 1979 a KZ so from start to mine they are all the same size.
The reason I ask is the ebay item here https://www.ebay.co.uk/itm/231571376767? ... 23da0&cp=1. they say they will fit a GL1000 now there are some small differences . At the bottom I added the sizes they say there discs are.

GL1000 1978 - 1979 REAR disc.
Outer diameter of 296.0 mm
Inside diameter 100.0 mm
Pitch circle diameter 120.0 mm
Number of bolt holes 5
Bolt hole diameter 8.5 mm
Thickness 7 mm
Minimum thickness 6 mm
Offset 22 mm

Front brake
left or right
Outer diameter of 276.0 mm
Inside diameter 58.0 mm
Pitch circle diameter 78.0 mm
Number of bolt holes 5
Bolt hole diameter 8.5 mm
Thickness 5 mm
Minimum thickness 4 mm
Offset 26 mm


Post (1) from seller (Rear Disc)
Hi the off set is approx 20mm front to baqck
outer 295 inner 100
pitch of holes is 8mm and the dia between is 115mm

Post (2) from seller (Front Discs)

Hi Ian

the off set is approx 20mm back to front
outer 295 inner 100
pitch of mounting holes 8mm and its 115 between holes

hope this helps

 

[toytender01]

Well I found out that on the 80 1100 to the 83 they advertise NOT. some time in late 80 they changer from a 1 piston caliper to a 2 piston caliper, so beware of the 80-83 designation ask if 1 or 2 piston caliper. I know I have an 80 and a 82. They ARE diffreant.