Aprilia RC 250 (1979) vs Kawasaki Z 900RS 50th Anniversary (2022)
Comparison technical specifications
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| Make: | Aprilia | Kawasaki |
| Model: | RC 250 | Z 900RS 50th Anniversary |
| Years: | 1979 | 2022 |
| Engine: | Single cylinder, 2 stroke | Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder |
| Capacity: | 244.2 cc / 14.9 cu in | 948 cc / 57.8 cu-in |
| Bore x Stroke: | 72 x 60 mm | 73.4 x 56.0 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 12:1 | 11.8:1 |
| Induction: | Dell'Orto PHBE36 carburetor | DFI with 36mm Keihin throttle bodies |
| Ignition: | Electronic, Motoplat | TCBI with electronic advance |
| Starting: | Kick | Electric |
| Max Power: | 28.5 kW / 38.3 hp @ 8250 rpm | 110 hp / 82 kW @ 8500rpm |
| Max Torque: | 33.9 Nm / 3.46 kgf-m / 25 lb-ft @ 7750 rpm | 98 Nm / 72.7 lb-ft @ 7700 rpm |
| Clutch: | Multi disc, dry | Wet multi-disc, manual |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Sealed chain |
| Frame: | Single cradle, split in closed tubes, CrMo | High-tensile steel trellis. |
| Front Suspension: | Marzocchi fork, Ø35 mm | 41mm inverted fork with compression and rebound damping and spring preload adjustability |
| Rear Suspension: | Swingarm with two shocks, adjustable, Court & Cossus | Horizontal Back-link, gas-charged shock with rebound and preload adjustability |
| Front Brakes: | Gimeca Ø140 mm drum | 2x 300 mm semi-floating discs, dual opposed 4 piston calipers |
| Rear Brakes: | Gimeca Ø140 mm drum | Single 250mm petal disc, 1 piston caliper |
| Dimensions: | Length: 2140 mm / 84.3 in Height: 1200 mm / 47.2 in | Length 2100 mm / 82.6 in Width 845 mm / 33.2 in Height 1190 mm / 46.9 in |
| Wheelbase: | 1470 mm / 57.9 in | 1470 mm / 57.8 in |
| Ground Clearance: | 300 mm / 11.8 in | 130 mm / 5.1 in |
| Seat Height: | 910 mm / 35.8 in | 820 mm / 32.2 in |
| Fuel Capacity: | 8 L / 2.1 US gal / 1.8 Imp gal | 17 Litres / 4.5 US gal |