Aprilia SX 50 (2014-15) vs Yamaha MT 25 (2019-20) vs Kawasaki Ninja H2 / ZX 1000 (2018)
Comparison technical specifications
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| Make: | Aprilia | Yamaha | Kawasaki |
| Model: | SX 50 | MT 25 | Ninja H2 / ZX 1000 |
| Years: | 2014-15 | 2019-20 | 2018 |
| Engine: | Single cylinder, two stroke | Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder | Four Stroke, transverse four cylinder, DOHC, 16 valve, Supercharger Centrifugal, scroll-type |
| Capacity: | 49.9 cc / 3.04 cu in | 249 cc / 15.1 cu-in | 998 cc / 60.9 cub in |
| Bore x Stroke: | 39.9 x 40 mm | 60 x 44.1 mm | 76 x 55 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 11.5:1 | 11.6:1 | 8.5:1 |
| Lubrication: | Automatic mixer | Wet sump | Forced, wet sump with oil cooler |
| Induction: | Dell'Orto PVHA 17.5 carburetor | Electronic Fuel Injection | 50 mm x 4 with dual injection, |
| Ignition: | Electronic CDI | TCI: Transistor Controlled Ignition | Digital |
| Starting: | Kick | Electric | Electric |
| Transmission: | 6 speed | Constant Mesh, 6-speed | 6-Speed |
| Final Drive: | Chain | Chain | Chain |
| Frame: | Steel beam | Diamond-type steel frame | Trellis, high-tensile steel, with swingarm mounting plate |
| Front Suspension: | Hydraulic fork, Ø 40 mm | Telescopic forks; | 43 mm Inverted fork with rebound and compression damping, spring preload adjustability and top-out springs |
| Rear Suspension: | High strength steel swingarm, hydraulic monoshock | KYB® single shock. swinging arm | Uni-Trak® with gas-charged shock, piggyback reservoir, dual-range (high/low-speed) compression damping, rebound damping and preload adjustability, and top-out spring |
| Front Brakes: | Single stainless steel disc, Ø 260 mm, floating caliper | Single 298mm disc 2 piston caliper | Dual 330 mm discs, radial-mount, opposed 4-piston calipers, dual semi-floating |
| Rear Brakes: | Single disc, Ø 180 mm, floating caliper | Single 220mm disc 2 piston caliper | Single 250mm disc, opposed 2-piston calipers, |
| Front Tyre: | 100/80 ZR17 | 110/70-17M/C 54H | 120/70 ZR17 M/C (58W) |
| Rear Tyre: | 130/70 ZR17 | 140/70-17M/C 66H 5.1 in of trave | 200/55 ZR17 M/C (78W) |
| Wheelbase: | 1400 mm / 55.1 in | 1379.2 mm / 54.3 in | 1455 mm / 57.3 in |
| Seat Height: | 835 mm / 32.9 in | 779.7 mm / 30.7 in | 826 mm / 32.5 in |
| Fuel Capacity: | 7 Litres / 1.85 US gal | 14 Litres / 3.7 US gal | 17 Litres / 4.5 US gal |