What fork seal fits a Harley-Davidson Fat Bob FXFB?

The Harley-Davidson Fat Bob FXFB uses a 43 mm fork with 43x54x11 oil seals. 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 Harley-Davidson Fat Bob FXFB fork?

The Harley-Davidson Fat Bob FXFB has a 43 mm fork with 43x54x11 oil seals.

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 Harley-Davidson Fat Bob FXFB.

Harley-Davidson Fat Bob FXFB Fork Seals

Q: What fork oil does the Harley-Davidson Fat Bob FXFB use?

The Harley-Davidson Fat Bob FXFB uses 15wt fork oil, about 311 ml per leg (factory fill H-D Type E fork oil (41.1 cSt@40C = SAE 15)).

The Harley-Davidson Fat Bob FXFB runs a 43 mm front fork, oil seal 43x54x11.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.

Fork tube43 mm
Oil seal size43x54x11

Kit	Years	Seal size	Replaces OEM
55-120	2018–2020	43x54x11	Ducati 34920261A, Ducati 34920211A
56-133-1	2018–2020	n/a	n/a
57-108-1	2018–2020	n/a	n/a

Verified fork kits we stock for your Harley-Davidson Fat Bob FXFB

Fork Seal Kit

Fork Oil Seal Kit — Tiger Sport 1200 (2017-2019)

$18.24

Fork Seal Kit

Fork Oil & Dust Seal Kit — Aprilia Dorsoduro 750

$37.79

Fork Seal Kit

Fork Dust Seal Kit — Aprilia Dorsoduro 750

$19.50

Fork oil for your Harley-Davidson Fat Bob FXFB

A fork-oil change on the Harley-Davidson Fat Bob FXFB uses 15wt fork oil, about 311 ml per leg. Factory fill: H-D Type E fork oil (41.1 cSt@40C = SAE 15).