Royal Enfield Classic 650 (2025) vs Yamaha SR 400SP (1983) vs Royal Enfield Bullet 500 Classic Stealth Black (2019)
Comparison technical specifications
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| Make: | Royal Enfield | Yamaha | Royal Enfield |
| Model: | Classic 650 | SR 400SP | Bullet 500 Classic Stealth Black |
| Years: | 2025 | 1983 | 2019 |
| Engine: | Inline twin cylinder, SOHC | Four stroke, single cylinder, SOHC, 2 valves per cylinder. | Four stroke, single cylinder, OHV |
| Capacity: | 647.95 cc / 39.5 cu in | 399 cc / 24.3 cu-in | 499 cc / 30.4 cu-in |
| Bore x Stroke: | 78 x 67.8mm | 87 х 67.2 mm | 84 x 90 mm |
| Cooling System: | Air/oil-cooled | Air cooled | Air Cooled |
| Compression Ratio: | 9.5:1 | 8.5:1 | 8.5:1 |
| Induction: | Bosch fuel injection | BSR33 carburetor | Electronic fuel injection (EFI) |
| Ignition: | Digital electronic ignition | CDI | Digital electronic ignition |
| Starting: | Electric and kick | Kick | Electric & Kick |
| Max Power: | 34.6 kW / 46.4 hp @ 7250 rpm | 27 hp / 17.1 KW @ 7000 rpm | 20.3 kW / 27.2 hp @ 5250 rpm |
| Max Torque: | 51.5 Nm / 38.6 lb-ft @ 5650 rpm | 27.4 Nm / 6.3 kgf-m @ 6500 rpm | 41.3 Nm / 4.2 kgf-m / 30.5 lb-ft @ 4000 rpm |
| Clutch: | Wet multiplate | Wet, Multiple Disc | Wet, multiplate |
| Transmission: | 6 Speed, constant mesh | 5 Speed | 5 Speed, constant mesh |
| Final Drive: | Chain | Chain | Chain |
| Frame: | Steel tubular, double cradle | Steel Double Cradle | Single Down Tube, using engine as stressed member |
| Front Suspension: | 44mm telescopic fork, Showa | 35mm Telescopic fork | 35mm Hydraulic telescopic fork |
| Front Wheel Travel: | 120 mm / 4.7 in | 105 mm / 4.1 in | 130 mm / 5.1 in |
| Rear Suspension: | Dual shocks, preload adjustable, Showa | Dual shocks, 5-way adjustable preload | Twin shocks, gas charged with 5-step adjustable preload |
| Front Brakes: | Single floating disc, ? 320 mm, 2 piston floating caliper, ABS | Single disc | Single 280mm disc, 2 piston caliper, ABS |
| Rear Brakes: | Single disc, ? 300 mm / single floating caliper, ABS | Drum | 240 mm disk, 1 piston floating caliper, ABS |
| Front Tyre: | 100/90 -19 | 3.50-19 | 90/90-19 - 52 P |
| Rear Tyre: | 140/70 -18 | 4.00-16 | 110/80-18 - 62 P |
| Wheelbase: | 1475 mm / 58.1 in | 1410 mm / 55.5 IN | 1380 mm / 51.5 in |
| Ground Clearance: | 154.9 mm / 6.1 in | 130 mm / 5.1 in | 135 mm / 5.3 in |
| Seat Height: | 800 mm / 31.5 in | 790 mm / 30.9 in | 800 mm / 31.5 in |
| Wet Weight: | 243 kg / 535 lbs | 174 kg / 384 lbs | 196 kg / 432 lbs |
| Fuel Capacity: | 14.8 Litres / 3.9 US gal | 12 Litres / 3.2 gal | 13.5 Litres / 29.7 US gal |