Aprilia SR GP 400 (2026) vs Vespa 150 Cosa and Cosa Elestart (1988-98) vs Kawasaki Versus1100SE/LT (2025) vs Aprilia RS 125 GP Replica (2025)
Comparison technical specifications
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| Make: | Aprilia | Vespa | Kawasaki | Aprilia |
| Model: | SR GP 400 | 150 Cosa and Cosa Elestart | Versus1100SE/LT | RS 125 GP Replica |
| Years: | 2026 | 1988-98 | 2025 | 2025 |
| Engine: | Four stroke single cylinder, SOHC, 4 valves | Two stroke, single cylinder | Four stroke, in-line four cylinder, DOHC, 4 valve per cylinder | Four stroke, single cylinder, DOHC, 4 valves |
| Capacity: | 399 cc / 24.3 cu in | 150 cc / 9.2 cub in | 1099 cc / 67.1 cu-in | 124.2 cc / 7.6 cu-in |
| Bore x Stroke: | 84 x 72 mm | 57.8 x 57 mm | 77 x 59 mm | 58 X 47 mm |
| Ignition: | Electronic | Electronic | Digital | Electronic with CDI capacity discharge |
| Starting: | Electric | Kick start | Electric | Electric |
| Max Power: | 26.8 kW / 36 hp @ 7500 rpm | 6.25 kW / 8.5 hp @ 5700 rpm | 99 kW / 133 hp @ 9000 rpm | 11 kW / 15 hp @ 10500 rpm |
| Max Torque: | 36.6 Nm / 27.8 lb-ft @ 5700 rpm | 12.75 Nm / 1.27 kgf-m / 9.4 lb-ft @ 4500 rpm | 112 NM / 83.0 lb-ft @ 7600 rpm | 11.4 Nm / 8.4 lb-ft @ 8500 rpm |
| Clutch: | Automatic multi-disc centrifuge in oil bath | Wet, multiplate | Wet multi-disc, manual | Multiple discs, in oil bath |
| Transmission: | Automatic CVT speed variator with torque servo | 4 Speed, grip-shift, constant mesh | 6 Speed | 6 Speed |
| Final Drive: | Belt | Direct drive | Chain | Chain, drive ratio: 13/58 |
| Frame: | Double-cradle structure made from high-strength steel tubes | Pressed sheet steel, streamlined monocoque structure | Twin tube, aluminium | Aluminum perimeter frame |
| Front Brakes: | Single 300 mm Floating disc with radial mounting caliper with 4 opposing 28 mm pistons | 150 mm drum | 2 x semi-floating 310 mm Brembo discs, dual radial-mount, opposed 4-piston | Single 300 mm stainless steel disc, 4 pistons radial caliper |
| Rear Brakes: | Single 240 mm disc, with dual piston caliper | 150 mm drum | Single 250mm disc petal-type rotor with 1 piston caliper and ABS | Single 218 mm stainless steel disc, single piston calliper. Metal-braided connecting hoses |
| Front Tyre: | 120/70-16?, Tubeless | 3.0 x 10" | 120/70ZR17M/C (58W) | 100/80 - 17 |
| Rear Tyre: | 150/70-14?, tubeless | 3.0 x 10" | 180/55 ZR17M/C (73W) | 140/70 ? ZR 17 |
| Fuel Capacity: | 12 Litres / 3.17 US gal | 7.7 L / 2 US gal | 21 Litres / 5.5 US gal | 14.5 Litres / 3.8 US gal |