Author Topic: CB550 Serial Number & Part Dilemma  (Read 1734 times)

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Offline quidger

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CB550 Serial Number & Part Dilemma
« on: October 19, 2009, 10:37:41 AM »
My 1975 CB550 K1 has a serial number of 1228785. The parts fiche from Honda says that the front fork seal for my bike goes up to frame #1221024. The '76 model starts at frame #1230000. It looks like I'm stuck in the middle.

Please give me some input on which way I should go on this. It seems logical that since my serial # is toward the end of the 1975 production #'s that Honda started switching parts into the '76 production model prior to the end of the '75 production run and that I would order the fork seals from the 1976 model but I hate to order and have to try to return, etc.

But I don't know, just a guess. Hope someone else has a better idea than me.

Thanks.

Offline paulages

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  • 1976 cb735
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Re: CB550 Serial Number & Part Dilemma
« Reply #1 on: October 19, 2009, 11:42:46 AM »
just make sure they're 35X48X11 and they'll work fine. same size seals for both bikes, the lowers are just taller on the later ones.
paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline SohRon

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Re: CB550 Serial Number & Part Dilemma
« Reply #2 on: October 20, 2009, 05:37:21 AM »
Bikebandit has what you need: sn243400-001  $9 apiece...
« Last Edit: October 20, 2009, 05:39:34 AM by SohRon »
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html