KTM 250 EX/C Enduro (1997-98) vs Yamaha YZF-R 25 (2021) vs Yamaha YZF1000 R1 (1998) vs Kawasaki Z 900RS Café (2021) vs Yamaha YZF1000 R1 (2007) vs Yamaha TT 600 (1983-84)

Comparison technical specifications

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Make:	KTM	Yamaha	Yamaha	Kawasaki	Yamaha	Yamaha
Model:	250 EX/C Enduro	YZF-R 25	YZF1000 R1	Z 900RS Café	YZF1000 R1	TT 600
Years:	1997-98	2021	1998	2021	2007	1983-84
Engine:	Two stroke, single cylinder	Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.	Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, single cylinder, SOHC, 4 Valve
Capacity:	249 cc / 15.2 cu in	249 cc / 15.1 cu-in	998 cc / 60.9 cu-in	948 cc / 57.8 cu-in	998 cc / 60.9 cu-in	595 cc / 36.5 cu-in
Bore x Stroke:	67.5 x 69.5 mm	60 x 44.1 mm	74 x 58 mm	73.4 x 56.0 mm	77 X 53.6 mm	95 x 84 mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled
Compression Ratio:	6.0:1	11.6:1	11.8:1	11.8:1	12.7:1	8.5:1
Lubrication:	Two stroke oil, mix: 1:50 - 1:60	Wet sump	Wet sump	Forced lubrication wet sum	Wet sump	Dry sump
Induction:	Keihin PWK 36 S AG Carburettor	Electronic Fuel Injection	4 x 40mm Mikuni CV Downdraft carburetors	DFI with 36mm Keihin throttle bodies	Fuel Injection with YCC-T and YCC-I	27mm Dual stage Teikei Y27PVX1 carburetor
Ignition:	Kokusan digital 2K-3	TCI: Transistor Controlled Ignition	Digital TCI	TCBI with electronic advance	TCI (Transistor Controlled Ignition)	CDI
Starting:	Kick	Electric	Electric	Electric	Electric	Kick
Transmission:	5 Speed	Constant Mesh, 6-speed	6 Speed	6 Speed	6 Speed	5 Speed
Final Drive:	Chain, 5/8" x 1/4"	Chain	Chain	Sealed chain	#530 O-ring chain	Chain
Front Suspension:	WP Extreme Ø 50 mm upsidedown fork	41mm KYB telescopic fork	41mm inverted telescopic forks	41mm inverted fork with compression and rebound damping and spring preload adjustability	43mm inverted telescopic fork w/adjustable preload, compression damping, rebound damping;	43mm Telescopic forks
Rear Suspension:	WP Progressive Damping System shock absorber, aluminium swingarm	KYB monocross	Truss-type Aluminium swinging arm Monocross system	Horizontal Back-link, gas-charged shock with rebound and preload adjustability	Single shock w/piggyback reservoir; adjustable for hi-/lo-speed compression damping, rebound damping, spring preload	Monocross single shock 20-way compression, reload and rebound adjustment.
Rear Wheel Travel:	320 mm / 12.6 in	124.4 mm / 4.9 in	130 mm / 5.1 in	140 mm / 5.5 in	130 mm / 5.1 in	270 mm / 10.6 in
Front Brakes:	Single 260 mm disc, floating caliper	Single 298mm disc 2 piston caliper	2 x 298mm discs 4 piston calipers	2x 300 mm semi-floating discs, dual opposed 4 piston calipers	2 x 310mm discs 6 piston calipers	Drum
Rear Brakes:	Single 220 mm disc, floating caliper	Single 220mm disc	Single 256mm disc 2 piston caliper	Single 250mm petal disc, 1 piston caliper	Single 220mm disc 1 piston caliper	Drum
Front Tyre:	90/90 - 21" 54R	110/70-17M/C 54S	120/70 ZR17	120/70ZR17M/C (58W)	120/70 ZR17	100/80-21
Rear Tyre:	140/80 - 18" 70R	140/70-17M/C 66S	190/50 ZR17	180/55ZR17M/C (73W)	190/50 ZR17	140/90-18
Trail:	114 mm / 4.5 in	93.9 mm / 3.7 in	91 mm / 3.8 in	98 mm / 3.8 in	102 mm / 4.0 in	130 mm / 5.1 in
Wheelbase:	1481 mm / 58.3 in	1379.2 mm / 54.3 in	1395 mm / 54.9 in	1470 mm / 57.8 in	1415 mm / 55.7 in	1485 mm / 58.5 in.
Ground Clearance:	385 mm / 15 in	160 mm / 6.2 in	140 mm / 5.5 in	130 mm / 5.1 in	135 mm / 5.3 in	300mm / 11.8 in.
Seat Height:	925 mm / 36.4 in	758 mm / 29.6 in	813 mm / 32.3 in	820 mm / 32.2 in	835 mm / 32.9 in	935mm / 36.8 in.
Fuel Capacity:	9.5 Litres or 12 L / 2.5 US gal or 3.2 US gal	14.3 Litres / 3.7 US gal	18 Litres / US 4.7 gal	17 Litres / 4.5 US gal	18 Litres / 4.0 US gal	11 liters / 2.9 US gal