Replace 1970 Honda CB350 Fork Seals

Reader Contribution by The Motorcycle Classics Staff
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The forks shown here are off our 1970 Honda CB350 project bike, which, given the state of the rest of the bike, we knew needed new seals at the very least and more likely new fork tubes. Stripping them apart we learned two things: First, early series 1968-1971 CB350 forks are amongst the easiest we’ve ever worked on; and second, yes, we need new fork tubes.

To be fair, our original fork tubes are perfectly serviceable. They might not be pretty, but they’re straight and the critical wear surface area where the seal makes contact is fine; it’s just the top third, hidden under the upper fork tube covers, that’s rusty. Although we’ll be swapping in a new set of fork tubes from Forking by Frank, what you see here is pretty representative of what you’ll see on most old survivors; fork tubes that are a little battle scarred and ugly, but still perfectly usable.

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