SWM RS 300 R (2015) vs LIFAN Lifan S-Ray (2017-) vs AJS Tempest Roadster 125 (2017-)
Comparison technical specifications
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| Make: | SWM | LIFAN | AJS |
| Model: | RS 300 R | Lifan S-Ray | Tempest Roadster 125 |
| Years: | 2015 | 2017- | 2017- |
| Engine: | Single cylinder, four stroke, DOHC, 4 valve | Four stroke, single cylinder, SOHC, 2 valve | Single cylinder, YB 4-stroke, OHC |
| Capacity: | 297.4 cc / 18.15 cu in | 149 cc / 9.0 cu-in | 124 cc / 7.6 cu in |
| Bore x Stroke: | 83 x 55 mm | 57.4 x 57.84 mm | 54 x 54 mm |
| Cooling System: | Liquid cooled | Air cooled | Air cooled |
| Induction: | EFI, Mikuni D42 | Carburettor | Electronic Fuel Injection |
| Starting: | Electric with automatic decompressor | Electric | Electric and kick |
| Transmission: | 6-Speed, constant mesh | CVT Fully Automatic | 5-Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Upside-down telescopic hydraulic fork with forward axle; compression and rebound damping adjustment, Kayaba | Telescopic fork | Telescopic forks |
| Rear Suspension: | Progressive "Soft Damp" type with single hydraulic shock absorber; spring preload adjustment, compression and rebound damping adjustment (compression high & low speed), Kayaba | Swinging arm | Dual shocks, coil springs |
| Front Brakes: | Ø260 mm Fixed disc with hydraulic control and floating caliper | Single disc | Single disc |
| Rear Brakes: | Ø240 mm Floating disc, with hydraulic control and floating caliper | Drum | Single disc (Combined Braking System) |
| Front Tyre: | 90/90-21" Michelin Competition IV | 120/70-12 | 110/70-17 |
| Rear Tyre: | 140/80-18" Michelin Competition IV | 120/70-12 | 130/70-17 |
| Wheelbase: | 1496 mm / 58.9 in | 1270 mm / 50.0 in | 1330 mm / 52.4 in |
| Seat Height: | 963 mm / 37.9 in | 762 mm / 30.0 in | 780 mm / in |
| Dry Weight: | 107 kg / 236 lbs | 109.7 kg/ 242 lbs | 124 kg / lbs |
| Fuel Capacity: | 7.2 L / 1.9 US gal | 5.2 Litres / 1.4 US gal | 16 Litres / |