Yamaha Tracer 9 GT (2023) vs BMW R 47 (1927-28)
Comparison technical specifications
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| Make: | Yamaha | BMW |
| Model: | Tracer 9 GT | R 47 |
| Years: | 2023 | 1927-28 |
| Engine: | Four stroke, transverse triple cylinder, DOHC, 4 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated, OHV |
| Capacity: | 890 cc / 54.3 cu-in | 494 cc / 30.1 cu in. |
| Bore x Stroke: | 78 x 62.1 mm | 68 x 68 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 11.5:1 | 5.8:1 |
| Induction: | Electronic Fuel Injection with YCC-T | 1 x BMW Spezial 2 valve 22 mm carburetor |
| Ignition: | TCI: Transistor Controlled Ignition | Bosch magneto ignition |
| Starting: | Electric | Kick |
| Max Power: | 117.4 hp / 87.5 kW @ 10000 rpm | 13.2 kW / 18 hp @ 4000 rpm |
| Clutch: | Wet multiplate assist and slipper clutch | Single plate saucer spring, dry |
| Transmission: | 6 Speed, constant mesh | 3 Speed |
| Final Drive: | O-ring chain | Shaft |
| Frame: | Lightweight CF aluminium die-cast frame | Twin loop steel tubular frame |
| Front Suspension: | 41mm semi-active KYB inverted fork, fully adjustable preload, compression and rebound | Plate spring, 5 laminae |
| Rear Suspension: | Single shock, fully adjustable, semi-active horizontal KYB shock | Rigid, Spring loaded saddle |
| Front Brakes: | 2x 298mm hydraulic discs, 4-piston Nissin calipers | ∅150mm Drum |
| Rear Brakes: | Single 245mm hydraulic disc, single piston Nissin caliper | External shoe brake at the gearing on Cardan shaft |
| Front Tyre: | 120/70Z R17 M/C (58W) (Tubeless) | 27 x 3.5" low pressure or 26 x 3.0" high pressure |
| Rear Tyre: | 180/55Z R17 M/C (73W) (Tubeless) | 27 x 3.5" low pressure or 26 x 3.0" high pressure |
| Wet Weight: | 220 kg / 485 lbs | 130 kg / 286 lbs |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 14 liters / 3.6 US gal |