Kawasaki ZX-4RR Ninja KRT (2023) vs Kawasaki BR 250 Casual Sports (1985) vs Kawasaki ZR-X 400 (2007-08)

Comparison technical specifications

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Make:	Kawasaki	Kawasaki	Kawasaki
Model:	ZX-4RR Ninja KRT	BR 250 Casual Sports	ZR-X 400
Years:	2023	1985	2007-08
Engine:	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, single cylinder, DOHC, 4 valve	Four stroke parallel twin cylinder. DOHC, 2 valves per cylinder
Capacity:	399 cc / 24.3 cu-in	248 cc / 15.2 cu-in	399 cc / 24.4 cu-in
Bore x Stroke:	57.0 x 39.2 mm	74 X 58mm	57.5 х 38.5 mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled
Compression Ratio:	12.6:1	NA	11.2:1
Induction:	EFI with four 34mm throttle bodies	Carburetor	4x Keihin CVK30 carburetors
Starting:	Electric	Electric	Electric
Max Power:	-	34 hp / 25.3 kW @ 10000 rpm	53 hp / 39.5 kW @ 11500 rpm
Max Torque:	35.9 Nm / 26.5 lb-ft @ 11000 rpm	24.5 Nm / 18 lb-ft @ 9000 rpm	37 Nm / 27.3 lb-ft @ 9000 rpm
Transmission:	6-speed with quickshifter and Positive Neutral Finder	6 Speed	6 Speed
Final Drive:	Sealed chain	Chain	Chain
Front Suspension:	37mm Showa SFF-BP inverted fork spring-preload adjustable	Telescopic forks	39mm RWU telescopic forks
Rear Suspension:	Linkage-assisted, fully adjustable, cantilevered Showa BFRC Lite piggyback-reservoir shock	Dual shocks	Dual shocks preload adjustment
Front Brakes:	2 x 290mm semi-floating petal disc with radially mounted 4-piston monobloc calipers	Single disc	2x 298mm discs 6 piston calipers
Rear Brakes:	Single 290mm petal disc with single-piston caliper	Drum	Single 240mm disc 2 piston caliper
Front Tyre:	120/70 x 17	90/90 16	110/80-17
Rear Tyre:	160/60 x 17	110/80 18	150/70-18
Seat Height:	800 mm / 31.5 in	730 mm / 28.7 in	780 mm / 30.7 in
Fuel Capacity:	15 Litres / 4.0 US gal	12 Litres / 3.1 US gal	16 Litres / 4.2 US gal