CB 550K3 1978 USA seat cover

[DarkestCrow]

I`d like to replace a seat cover on my imported CB550 K3 but couldn`t find any for sale online here in the UK.

It`s a dual seat type year 1978.

I found few for CB750 same year and they look very similar but I couldn`t find any measurements online to compare them.

Can anyone help please?

[Bryanj]

I think US and UK seat covers are the same just ask for 550K3

[DarkestCrow]

Mine is a dual seat, there are only the flat ones available online.

[Nurse Julie]

CB750 seats and covers are different than 550K3.

[Bryanj]

They are all dual seats

[Bryanj]

Temporarily out of stock, see attachements

[mickwinf]

Do you mean the type that steps up at the back, that was USA only for last year of production.also known as a k4, will have to order from an American supplier as I did a few years ago.

[Johnny4428]

I agree with the above, don’t think there was any K3’s that had the stepped seat.

[DarkestCrow]

Do you mean the type that steps up at the back, that was USA only for last year of production.also known as a k4, will have to order from an American supplier as I did a few years ago.

Yes, stepped seat.

Well mine is apparently K3 manufactured in Nov. 1977 (1978 model) but it also could be a swapped seat from a K4 model?

Can you remember which supplier? What was the quality like?

I just don`t have a good experience with ordering stuff from USA.

[Nurse Julie]

The stepped seat was only on the 78 model which yours is and was known just as a K model with no number after it. A 77 model (manufactured late 1976) is the K3 that has the normal flat seat. To confirm, your engine and VIN number should be in these range.
frame range   CB550K 2100001 - CB550K 2122082
engine range   CB550E 2100001 - CB550E 2122090

[DarkestCrow]

The stepped seat was only on the 78 model which yours is and was known just as a K model with no number after it. A 77 model (manufactured late 1976) is the K3 that has the normal flat seat. To confirm, your engine and VIN number should be in these range.
frame range   CB550K 2100001 - CB550K 2122082
engine range   CB550E 2100001 - CB550E 2122090

Okay it makes sense now.

Vehicle dating certificate and V5C both say that it`s a K3 model.

So is there any chance that both stepped seats (1978 CB550 and 1978 CB750) would have the same measurements? Couldn`t find any specs for CB750 online.

Thanks

[Bryanj]

Very doubtfull as 750 is bigger, you should be able to fit a flat K3 seat if necessary

[DarkestCrow]

Thank you guys