What fork seal fits a Kawasaki Ninja ZX-9R?

The Kawasaki Ninja ZX-9R uses a front fork that changed across model years: 41 mm (1994–1997), 46 mm (1998–1999), 46 mm (2000–2001), 46 mm (2002–2003). 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 Kawasaki Ninja ZX-9R fork?

The Kawasaki Ninja ZX-9R has a front fork that changed across model years: 41 mm (1994–1997), 46 mm (1998–1999), 46 mm (2000–2001), 46 mm (2002–2003).

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 Kawasaki Ninja ZX-9R.

Kawasaki Ninja ZX-9R Fork Seals

Q: What fork oil does the Kawasaki Ninja ZX-9R use?

The Kawasaki Ninja ZX-9R uses 10wt fork oil (factory fill KYB KHL-15-10 / Showa SS (~10wt)).

Fork specs for the Kawasaki Ninja ZX-9R 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.

Years	Fork tube	Fork
1994–1997	41 mm	Kayaba
1998–1999	46 mm	Kayaba
2000–2001	46 mm	Kayaba
2002–2003	46 mm	Kayaba

Kit	Years	Seal size	Replaces OEM
55-117	1994–1997	41x53x8	Aprilia 2B004402
55-125	1998–2003	46x58x10	Honda 51490-MW0-003
55-137	1984–1993	38x50x8	n/a
57-103	1998–2003	n/a	n/a
57-107	1994–1997	n/a	n/a
56-166	1984–1993	n/a	n/a
57-153	1984–1993	n/a	n/a
56-129	1994–1997	n/a	n/a