KTM RC 390 (2018) vs Yamaha YBR 125 Custom (2007-)
Comparison technical specifications
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| Make: | KTM | Yamaha |
| Model: | RC 390 | YBR 125 Custom |
| Years: | 2018 | 2007- |
| Engine: | Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder | Four stroke, single cylinder, SOHC, 2 valves |
| Capacity: | 373 cc / 22.7 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 89 x 60 mm | 54 x 54 mm |
| Cooling System: | Liquid Cooled | Air cooled |
| Compression Ratio: | 12.6:1 | 10.0:1 |
| Induction: | Bosch Injection | Fuel infection |
| Ignition: | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment | CDI |
| Starting: | Electric | Electric & kick |
| Max Power: | 32 kW / 43 hp @ 9500 rpm | 10.1 hp / 7.4 kW @ 7800 rrpm |
| Max Torque: | 3.6 kgm /35.3 Nm @7250 rpm | 10 Nm @ 7400 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain 5/8 x 1/4” X‑Ring | Chain |
| Frame: | Tubular space frame made from steel, powder-coated | Steel double cradle |
| Front Suspension: | WP Suspension Up Side Down | Telescopic forks |
| Rear Suspension: | WP Monoshock | Bottom link swingarm |
| Rear Wheel Travel: | 150 mm / 5.9 in | 105 mm / 4.1 in |
| Front Brakes: | Single 320 mm disc 4 piston radial caliper | Single 245mm disc |
| Rear Brakes: | Single 230 mm disc 1 piston caliper | Drum |
| Front Tyre: | 110/70 R17 | 90/90-M21 |
| Rear Tyre: | 150/60 R17 | 90/90-M18 |
| Rake: | 65 ° | 26° |
| Trail: | 100mm / 3.9 in | 90 mm / 3.5 in |
| Seat Height: | 820 mm / 32.2 in | 780 mm / 31.0 in |
| Wheelbase: | 1340 mm / 52.7 in | 1290 mm / 51 in |
| Fuel Capacity: | 10 Liters / 2.64 lbs | 12 Litres / 3.4 US gal |