Vespa 90, 90 SS and 90 Racer (1963-84) vs Yamaha XS 650 / TX 650 (1980-81) vs Vespa ET2 50 (1996-00) vs KTM Freeride 250R (2014-15) vs Vespa GTS 300 Yacht Club (2018)
Comparison technical specifications
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| Make: | Vespa | Yamaha | Vespa | KTM | Vespa |
| Model: | 90, 90 SS and 90 Racer | XS 650 / TX 650 | ET2 50 | Freeride 250R | GTS 300 Yacht Club |
| Years: | 1963-84 | 1980-81 | 1996-00 | 2014-15 | 2018 |
| Engine: | Two stroke, single cylinder | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | Two stroke, single cylinder | Two stroke, single cylinder | Four strike single cylinder, SOHC, 4 valve |
| Capacity: | 88.5 cc / 5.4 cub in | 653 cc / 39.8 cu in | 49.3 cc / 3.0 cub in | 249 cc / 15.2 cu-in | 278 cc / 18.2 cub in |
| Ignition: | Flywheel magneto coil | Battery, induction coil | Electric | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan | Electric |
| Starting: | Kick start | Electric and kick | Kick start | Electric | Electric |
| Max Power: | 4.4 kW / 6 hp @ 6000rpm | 39.5 kW / 53 hp @ 7200 rpm | 3 kW / 5.1 hp @ 7500 rpm | NA | 15.8 kW / 21.5 hp @ 7500 rpm |
| Transmission: | 3 gears (4 gears for the SS and Racer) | 5 Speed | Centrifugal automatic gearbox | 6 Speed, claw shifted | CVT with torque server |
| Final Drive: | Direct drive | Chain | Belt | Chain 5/8 x 1/4" X Ring | Belt |
| Front Suspension: | Coil spring and hydraulic shock absorber | Telescopic forks | Hydraulic single shock | WP Suspension4357 MXMA | Single arm, dual chamber hydraulic shock absorber with coaxial spring |
| Rear Suspension: | Coil spring and hydraulic shock absorber | Dual shock absorbers | Hydraulic single shock | WP-PDS shock absorber, | Duel effect shock absorbers with adjustable preload |
| Front Brakes: | 125 mm drum | Twin hydraulic discs, 267 mm | 200 mm disc | Single 260mm disc 2 piston caliper | Single 220 mm disc |
| Rear Brakes: | 150 mm drum | Drum | 110 mm drum | Single 210mm disc 1 piston caliper | Single 220 mm disc |
| Front Tyre: | 3 x 10" | 3.50H-19 4PR | 100/80-10" | 80/100-21 | 110/70-R12" |
| Rear Tyre: | 3 x 10" | 4.00H-18 4PR | 120/70-10" | 110/90-19 | 130/70-R12" |
| Wheelbase: | 1180 mm / 46.5 in | 1435 mm / 56.5" | 1280 mm / 50.4 in | 1418 mm / 55.8 in | 1370 mm / 53.9 in |
| Fuel Capacity: | 5.2 L / 1.3 US gal | 15 Litres / 4.0 US gal | 9 L / 2.4 US gal | 7.0 Litres / 1.85 US gal | 9.2 Litres / 2.4 US gal |