Kawasaki Z 400 Special (1977) vs Yamaha DT 125MX (1981) vs Kawasaki ER-6n (2014) vs KTM 250 EX/C Enduro (1997-98) vs Yamaha YZF1000 R1 (2007)
Comparison technical specifications
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| Make: | Kawasaki | Yamaha | Kawasaki | KTM | Yamaha |
| Model: | Z 400 Special | DT 125MX | ER-6n | 250 EX/C Enduro | YZF1000 R1 |
| Years: | 1977 | 1981 | 2014 | 1997-98 | 2007 |
| Engine: | Four stroke, parallel twin cylinder, SOHC, 2 Valve per cylinder. | Two stroke, single cylinder, reed-valve | Four stroke, parallel twin, DOHC, 4 valves per cylinder. | Two stroke, single cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 398 cc / 24.2 cu-in | 123 cc / 7.5 cu-in | 649 cc / 39.6 cu-in | 249 cc / 15.2 cu in | 998 cc / 60.9 cu-in |
| Bore x Stroke: | 64 х 62 mm | 56 х 50 mm | 83 X 60 mm | 67.5 x 69.5 mm | 77 X 53.6 mm |
| Compression Ratio: | 9.4:1 | 7.2:1 | 11.3;1 | 6.0:1 | 12.7:1 |
| Cooling System: | Air cooled | Air cooled | Liquid cooled, | Liquid cooled | Liquid cooled |
| Lubrication: | Forced lubrication, wet sump | Autolube | Wet sump | Two stroke oil, mix: 1:50 - 1:60 | Wet sump |
| Induction: | 2x Keihin CV32 6caburetor | Single 24 mm Mikuni | 2x 38mm Electronic Fuel Injection Keihin | Keihin PWK 36 S AG Carburettor | Fuel Injection with YCC-T and YCC-I |
| Ignition: | Battery & coil | Flywheel Magneto | Digital TCBI | Kokusan digital 2K-3 | TCI (Transistor Controlled Ignition) |
| Starting: | Electric & kick | Kick | Electric | Kick | Electric |
| Transmission: | 5 Speed | 6 speed | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain, 5/8" x 1/4" | #530 O-ring chain |
| Front Suspension: | Telescopic fork | Telescopic Forks | 41 mm telescopic fork, | WP Extreme Ø 50 mm upsidedown fork | 43mm inverted telescopic fork w/adjustable preload, compression damping, rebound damping; |
| Rear Suspension: | Swing arm | Monocross | Offset laydown single-shock with adjustable preload, | WP Progressive Damping System shock absorber, aluminium swingarm | Single shock w/piggyback reservoir; adjustable for hi-/lo-speed compression damping, rebound damping, spring preload |
| Front Brakes: | Drum | Drum | 2x 300mm discs 2 piston Calipers | Single 260 mm disc, floating caliper | 2 x 310mm discs 6 piston calipers |
| Rear Brakes: | Drum | Drum | Single 220mm disc 1 piston Caliper | Single 220 mm disc, floating caliper | Single 220mm disc 1 piston caliper |
| Front Tyre: | 3.25 - S18 4PR | 2.75-21 | 120/70ZR17 | 90/90 - 21" 54R | 120/70 ZR17 |
| Rear Tyre: | 3.50 - SIB 4PR | 3.50-18 | 160/60ZR17 | 140/80 - 18" 70R | 190/50 ZR17 |
| Wheelbase: | 1370 mm / 53.9 In | 1325 mm / 52.2 in | 1410 mm / 55.5 in | 1481 mm / 58.3 in | 1415 mm / 55.7 in |
| Ground Clearance: | 125 mm / 4.9 in | 265 mm / 10.4 in | 130 mm / 5.1 in | 385 mm / 15 in | 135 mm / 5.3 in |
| Fuel Capacity: | 14 Litres / 3.6 US gal | 7 Litres / 1.58 gal | 16 Litres / 4.2 US gal. | 9.5 Litres or 12 L / 2.5 US gal or 3.2 US gal | 18 Litres / 4.0 US gal |