Topic: Washers for shock mounting

[beemerbum]

Am I right that washers (spacers) are needed in mounting the shock to the swingarm? It sure looks like it. How about under the acorn nut at the top of the shock?

[CycleRanger]

What bike what year?
The lower bolts don't usually have washers.
The top acorn nuts use a large flat washer.

Are those after market shocks?

[beemerbum]

Sorry.. '71 K1.

[BomberMann650]

75 550f didnt have gaposis like that.

[That 70s Bike]

http://www.hondaparts-direct.com/oempartfinder.htm#/Honda/CB750K1A_MOTORCYCLE,_JPN,_VIN%23_CB750-1044650/REAR_SHOCK_ABSORBER/CB750K1-JPN-A/2Y143410AF14341021A

[754]

Does not look right, get a spacer that fits nice, in there...

[rotortiller]

You should have a metal bushing inside the rubber or a stepped bolt (situation/configuration dependent). You don't want to squeeze and distort the fork or the rubber plus you don't want slop. Skin kat as you see fit.

rt

[beemerbum]

The shocks are reproductions from 4 into 1.

[That 70s Bike]

Ok, I think a "71 K1" can be a '71 CB500 or a '71 cb750.
Regardless, I measured the lower mount/shock opening on a "stock" '73 CB500, '76 CB550 & '76 CB750. All were 18mm width, exact slip fit and no spacer.

copied from 4into1 website on their CB750 shock:

Dimensions:
Length: 335mm (13.2") measured from center of mounting points.
Diameter of springs = 2.3"
Overall Length = 14 1/2"
Inner diameter of upper rubber bushing = 15mm (.6")
Distance between clevis holes: 22mm
Chrome Cover: Length 4"
Chrome Cover: OD = 2.5"

Fits Honda:
CB750K - 1969-1978
CB750F - 1975-1978