Kawasaki Ninja 400 (2018–2023) vs Suzuki Boulevard S40 (2007–2022)

Factory maintenance schedules compared.

Service	Kawasaki Ninja 400 (2018–2023)EXKH	Suzuki Boulevard S40 (2007–2022)NP41
Oil change	n/a	n/a
Valve service	15,200 mi	n/a
Spark plugs	7,600 mi	n/a
Chain	7,600 mi	n/a
Brake fluid	n/a	n/a
Coolant	n/a	n/a

See the full maintenance matrix

Common questions

Which is cheaper to maintain, the Kawasaki Ninja 400 (2018–2023) or the Suzuki Boulevard S40 (2007–2022)?

They demand a similar number of scheduled shop visits based on their factory service intervals.