Aprilia RS 125 R (1997-98) vs Ducati 125 TS (1961-63) vs Ducati 916 Senna II (1997) vs Yamaha YZF 1000R Thunder ace (1999)
Comparison technical specifications
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| Make: | Aprilia | Ducati | Ducati | Yamaha |
| Model: | RS 125 R | 125 TS | 916 Senna II | YZF 1000R Thunder ace |
| Years: | 1997-98 | 1961-63 | 1997 | 1999 |
| Engine: | Single cylinder, two stroke, reed valves induction | Four stroke, single-cylinder. OHC | Four stroke, 90° “L” twin cylinder, DOHC, desmodromic 4 valve per cylinder, belt driven | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder |
| Capacity: | 125 cc / 7.6 cu in | 125 cc / 7.6 cu-in | 916 cc / 55.9 cu in | 1002 cc / 61.1 cu-in |
| Bore x Stroke: | 54 x 54.5mm | 55.2 x 52 mm | 94 x 66 mm | 75.5 x 56 mm |
| Compression Ratio: | 14.5:1 | 8.0;1 | 11.0:1 | 11.5:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled | Liquid cooled |
| Induction: | Dell'Orto VHSB 34LD | 22 mm Dell'orto carburetor | Weber I.A.W. CPU P8 electronic indirect injection | 4x 38mm Mikuni BDSR38 with TPS carbs |
| Ignition: | Electronic | Magnetic flywheel | Electronic I.A.W | Digital TCI |
| Starting: | Electric | Kick | Electric | Electric |
| Max Power: | 24.8 kW / 34 hp @ 11000 rpm | 7.3 kW 10 hp @ 7000 rpm | 83.8 kW / 114 hp @ 9000 rpm | 145 hp / 106.7kW @ 10000 rpm |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | Upside-down forks, Ø 40mm | Hydraulically damped telescopic forks | 43 mm Adjustable Showa GD051 inverted fork | 45mm forks, adjustable preload, bump and rebound. |
| Rear Suspension: | Monoshock | Dual chocks | Showa GD52-007-02, rising rate progressive linkage adjustable monoshock | Mono shock adjustable preload, bump and rebound. |
| Front Brakes: | Single 320 mm discs, 4 piston caliper | 158 Drum | 2 x 320 mm Discs, 4 piston calipers | 2x 298mm discs 4 piston calipers |
| Rear Brakes: | Single 240 mm disc, 2 piston caliper | 136 Drum | Single 220 disc, 2 piston caliper | Single 245mm disc 2 piston caliper |
| Front Tyre: | 110/70-17 | 2.75 -17 | 120/70 ZR17 | 120/70 ZR17 |
| Rear Tyre: | 150/60-17 | 2.50 -17 | 190/50 ZR17 or 180/55 ZR17 | 180/55 ZR17 |
| Dry Weight: | 115 kg / 254 lbs | 100.5 kg | 198 kg / 436 lbs | 198 kg / 436.5 lbs |