Yamaha YZF 600R Thundercat (2003-04) vs Yamaha XSR 155 (2021)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | YZF 600R Thundercat | XSR 155 |
| Years: | 2003-04 | 2021 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation |
| Capacity: | 599 cc / 36.5 cu-in | 155.1 cc / 9.14 cu-in |
| Bore x Stroke: | 62 x 49.6 mm | 58.0 × 58.7 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 12.0:1 | 11.6:1 |
| Induction: | 4 x 36 mm Keihin CV downdraft carburetors | Fuel Injection |
| Ignition: | Digital TCI | TCI |
| Starting: | Electric | Electric |
| Max Power: | 72.9 kW / 100 hp @ 11500 rpm | 14.1 kW / 19 hp @ 10000 rpm |
| Max Torque: | 65.7 Nm / 6.7 kgf-m / 48.7 lb-ft @ 9500 rpm | 14.7 Nm / 40.8 lb-ft @ 8500 rpm |
| Transmission: | 6 Speed | 6 Speed slip-and-assist clutch |
| Final Drive: | 530 O-ring chain OEM sprocket sizes per tooth Front= 15 Back= 47 | Chain |
| Frame: | Twin spar, steel, delta box | Steel Deltabox |
| Front Suspension: | 41 mm telescopic fork adjustable preload, compression and rebound damping | Upside-down Telescopic fork |
| Rear Suspension: | Monoshock adjustable preload, bump and rebound | Monoshock operating on a die-cast aluminium swingarm |
| Front Brakes: | 2x 300 mm Discs, 4 piston calipers | Single 282mm disc 2 piston caliper, ABS |
| Rear Brakes: | Single 245mm disc, 2 piston caliper | Single 240mm disc 1 piston caliper, ABS |
| Front Tyre: | 120/60-17 | 110/70 -17 |
| Rear Tyre: | 160/60-17 | 140/70 -17 |
| Trail: | 97 mm / 3.82 in | 89 mm / 3.5 in |
| Wheelbase: | 1415 mm / 55.7 in | 1330 mm / 52.3 in |
| Seat Height: | 810 mm / 31.7 in | 810 mm / 31.8 in |
| Ground Clearance: | 135 mm / 5.3 in | 170 mm / 6.6 in |
| Wet Weight: | 210 kg / 463 lbs | 134 kg / 295.4 lbs |
| Fuel Capacity: | 19 Litres / 5.0 US gal / 4.2 Imp gal | 10 Litres / 2.6 US gal |