What fork seal fits a Harley-Davidson FLHTKSE?

The Harley-Davidson FLHTKSE uses a front fork that changed across model years: 41 mm (2014–2017), 49 mm (2018–2021). 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 FLHTKSE fork?

The Harley-Davidson FLHTKSE has a front fork that changed across model years: 41 mm (2014–2017), 49 mm (2018–2021).

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 FLHTKSE.

Harley-Davidson FLHTKSE Fork Seals

Q: What fork oil does the Harley-Davidson FLHTKSE use?

The Harley-Davidson FLHTKSE uses 15wt fork oil, about 710 ml per leg (factory fill H-D Type E fork oil (41.1 cSt@40C = SAE 15)).

Fork specs for the Harley-Davidson FLHTKSE vary by year (see the table below).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 typeConventional
ForkShowa 49mm conventional (BMW R18 2021-2025)

Years	Fork tube
2014–2017	41 mm
2018–2021	49 mm

Kit	Years	Seal size	Replaces OEM
55-119	2014–2017	41x54x11	BMW 31422312838, BMW 31428358444
55-129	2018–2021	49x60x11	Harley-Davidson 91700025A, Honda 51490-KRN-A91

Verified fork kits we stock for your Harley-Davidson FLHTKSE

Fork Seal Kit

Fork Oil Seal Kit — BMW F650 (1997-1999) + 353

$18.24

Fork Seal Kit

Fork Oil Seal Kit — BMW R18 (2021-2025) + 141

$18.60

Fork oil for your Harley-Davidson FLHTKSE

A fork-oil change on the Harley-Davidson FLHTKSE uses 15wt fork oil, about 710 ml per leg. Factory fill: H-D Type E fork oil (41.1 cSt@40C = SAE 15).