What fork seal fits a Triumph 900 Thunderbird?

The Triumph 900 Thunderbird uses a 43 mm fork. We stock the manufacturer-verified seal and bushing kits for it; matching is done off the verified application list, not just the seal size.

What size is the Triumph 900 Thunderbird fork?

The Triumph 900 Thunderbird has a 43 mm fork.

Can I use any seal with the same dimensions?

No. Fork seals can share a size and still not seat correctly in a different fork design, so use the seal verified for your bike. The kits listed here are confirmed by the manufacturer to fit the Triumph 900 Thunderbird.

Triumph 900 Thunderbird Fork Seals

Q: What fork oil does the Triumph 900 Thunderbird use?

The Triumph 900 Thunderbird uses 10wt fork oil (factory fill Showa SS-8 / Kayaba (SAE 10)).

The Triumph 900 Thunderbird runs a 43 mm front fork.Every kit here is verified by the manufacturer to fit this exact bike. Fork seals can share a size and still not seat in a different fork, so we only list what is confirmed for your bike.