KTM 250 EX/C Enduro (1997-98) vs Yamaha YZF-R 25 (2021) vs Yamaha YZF1000 R1 (1998)
Comparison technical specifications
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| Make: | KTM | Yamaha | Yamaha |
| Model: | 250 EX/C Enduro | YZF-R 25 | YZF1000 R1 |
| Years: | 1997-98 | 2021 | 1998 |
| 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. |
| Capacity: | 249 cc / 15.2 cu in | 249 cc / 15.1 cu-in | 998 cc / 60.9 cu-in |
| Bore x Stroke: | 67.5 x 69.5 mm | 60 x 44.1 mm | 74 x 58 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 6.0:1 | 11.6:1 | 11.8:1 |
| Lubrication: | Two stroke oil, mix: 1:50 - 1:60 | Wet sump | Wet sump |
| Induction: | Keihin PWK 36 S AG Carburettor | Electronic Fuel Injection | 4 x 40mm Mikuni CV Downdraft carburetors |
| Ignition: | Kokusan digital 2K-3 | TCI: Transistor Controlled Ignition | Digital TCI |
| Starting: | Kick | Electric | Electric |
| Clutch: | Wet, multiplate, hydraulically operated | Wet, multiple-disc coil spring | Wet, multiple discs, cable operated |
| Transmission: | 5 Speed | Constant Mesh, 6-speed | 6 Speed |
| Final Drive: | Chain, 5/8" x 1/4" | Chain | Chain |
| Frame: | Central chrome-moly-steel frame | Diamond | Aluminium, twin spar |
| Front Suspension: | WP Extreme Ø 50 mm upsidedown fork | 41mm KYB telescopic fork | 41mm inverted telescopic forks |
| Rear Suspension: | WP Progressive Damping System shock absorber, aluminium swingarm | KYB monocross | Truss-type Aluminium swinging arm Monocross system |
| Rear Wheel Travel: | 320 mm / 12.6 in | 124.4 mm / 4.9 in | 130 mm / 5.1 in |
| Front Brakes: | Single 260 mm disc, floating caliper | Single 298mm disc 2 piston caliper | 2 x 298mm discs 4 piston calipers |
| Rear Brakes: | Single 220 mm disc, floating caliper | Single 220mm disc | Single 256mm disc 2 piston caliper |
| Front Tyre: | 90/90 - 21" 54R | 110/70-17M/C 54S | 120/70 ZR17 |
| Rear Tyre: | 140/80 - 18" 70R | 140/70-17M/C 66S | 190/50 ZR17 |
| Trail: | 114 mm / 4.5 in | 93.9 mm / 3.7 in | 91 mm / 3.8 in |
| Wheelbase: | 1481 mm / 58.3 in | 1379.2 mm / 54.3 in | 1395 mm / 54.9 in |
| Ground Clearance: | 385 mm / 15 in | 160 mm / 6.2 in | 140 mm / 5.5 in |
| Seat Height: | 925 mm / 36.4 in | 758 mm / 29.6 in | 813 mm / 32.3 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 |