Yamaha XJ 650 Turbo (1985-86) vs KTM 250 EXC-E Six Days (2011-) vs Yamaha RD 350RR (1985) vs Yamaha XV 250 Virago (2000-02)
Comparison technical specifications
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| Make: | Yamaha | KTM | Yamaha | Yamaha |
| Model: | XJ 650 Turbo | 250 EXC-E Six Days | RD 350RR | XV 250 Virago |
| Years: | 1985-86 | 2011- | 1985 | 2000-02 |
| Engine: | Four stroke transverse four cylinder. turbocharged. DOHC, 2 valves per cylinder, | Two stroke, single cylinder | Two stroke, parallel twin cylinder, YPVS | Four stroke, V-Twin cylinder, SOHC, 2 valve per cylinder |
| Capacity: | 653 cc / 39.8 cu-in | 249 cc / 15.2 cu in | 347 cc / 21.1 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 63 х 52.4 mm | 66.4 x 72.0 mm | 64 х 54 mm | 49 x 66 mm |
| Cooling System: | Air-cooled | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 8.2:1 | 12.8:1 | 6.2 :1 | 10.0:1 |
| Induction: | 4x 30mm pressurized Mikuni CVs carburetors | Keihin MX FCR 39 carburetor | 2x 26mm Mikuni slide-needle carburetor | BDS26 Mikuni carburetor |
| Ignition: | CDI | Contactless DC-CDI ignition with digital advanced system by KOKUSAN | Flywheel magneto CDI | CDI |
| Starting: | Electric | Kick and electric | Kick | Electric |
| Transmission: | 5 Speed | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Shaft | Chain, 5/8 x 1/4 in | Chain | Chain |
| Front Suspension: | 36mm Showa 140mm wheel travel, adjustments for air pressure | WP Suspension – 4860 MXMA / MXMA + PA | 35mm Telescopic forks air assistance and variable damping | Telescopic forks |
| Rear Suspension: | Dual Showa dampers, 79mm wheel travel, adjustments for air pressure, rebound damping | WP Suspension – 5018 PDS MCC / DCC, aluminium swing arm | Rising rate Monocross 5-way preload | Dual shocks |
| Front Brakes: | 2x 266mm discs | Single 260 mm disc, floating caliper | 2x 260mm disc 2 piston calipers | Single 282mm disc |
| Rear Brakes: | Single 200mm drum | Single 220 mm disc, floating caliper | Single 260mm disc 1 piston caliper | 130mm drum |
| Front Tyre: | 3.25-19 | 90/90 - 21 | 90/90-18 51H | 3.00-19 |
| Rear Tyre: | 120/90 V18 | 120/80 - 18 | 110/80-18 58H | 130/90-15 |
| Dry Weight: | 235 kg / 518 lbs | 103 kg / 227 lbs | 141 kg / 310.8 lbs | 137 kg / 302 lbs |
| Fuel Capacity: | 19.5 Litres / 5.0 US gal | 9.5 Litres / 2.5 US gal | 17 Litres / 4.5 US gal | 9.5 Liters / 2.5 US gal |