Yamaha RD 350RR (1984) vs Yamaha WR 250R (2019-20) vs Yamaha XVS 650 Drag Star (2000-02)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | RD 350RR | WR 250R | XVS 650 Drag Star |
| Years: | 1984 | 2019-20 | 2000-02 |
| Engine: | Two stroke, parallel twin cylinder, YPVS | Four stroke, single cylinder, DOHC, 4 valve | Four stroke, 75°V-twin cylinder, SOHC, 2 valve per cylinder |
| Capacity: | 347 cc / 21.1 cu-in | 249 cc / 15.2 cub in. | 649 cc / 39.6 cu-in |
| Bore x Stroke: | 64 х 54 mm | 77 x 53.6 mm | 81 x 63 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 6.2 :1 | 11.8:1 | 9.0:1 |
| Lubrication: | Autolube | Dry sump | Wet sump |
| Induction: | 2x 26mm Mikuni slide-needle carburetor | Electronic fuel injection | 28mm Mikuni downdraft-type carburetor |
| Ignition: | Flywheel magneto CDI | TCI | Digital TCI |
| Starting: | Kick | Electric | Electric |
| Clutch: | Wet multiplate | Wet, multi-plate | Wet, multiple disc |
| Transmission: | 6 Speed | 6 Speed, constant mesh | 5 Speed |
| Final Drive: | Chain | Chain | Shaft |
| Front Suspension: | 35mm Telescopic forks air assistance and variable damping | Inverted 46 mm fork, adjustable | Telescopic fork |
| Front Wheel Travel: | 140 mm / 5.5 in | 269 mm / 10.6 in. | 140 mm / 5.5 in |
| Rear Suspension: | Rising rate Monocross 5-way preload | Swingarm, single shock, 46 mm, adjustable | Swingarm Monocross |
| Rear Wheel Travel: | 100 mm / 3.9 in | 269 mm / 10.6 in. | 86 mm / 3.4 in |
| Front Brakes: | 2x 260mm disc 2 piston calipers | Hydraulic, single disc, 250 mm Ø | Single 298mm disc 2 piston calipers |
| Rear Brakes: | Single 260mm disc 1 piston caliper | Hydraulic, single disc, 230 mm Ø | 200mm drum |
| Front Tyre: | 90/90-18 51H | 80/100 -21 | 130/90-18 |
| Rear Tyre: | 110/80-18 58H | 120/80 -18 | 170/80-15 |
| Dimensions: | Length 2095 mm / 82.4 in Width 700 mm / 27.5 in Height 1190 mm / 46.8 in | Length: 2174 mm / 85.6 in Width: 810 mm / 31.9 in Height: 1229 mm / 48.4 in | Height 1105 mm / 43.5 in Length 2450 mm / 96.5 in width 930 mm / 36.6 in |
| Wheelbase: | 1385 mm / 54.5 in | 1420 mm . 55.9 in. | 1625 mm / 64 in |
| Seat Height: | 790 mm / 31.1 in | 930 mm / 36.6 in | 695 mm / 26.0 in |
| Ground Clearance: | 165 mm / 6.4 in | 300 mm / 11.8 in. | 145 mm / 5.7 in |
| Fuel Capacity: | 17 Litres / 4.5 US gal | 7.6 Litres / 2 US gal | 16 Litres / 4.2 US gal |