Yamaha FZR 1000 Geneses (1987) vs BMW R nineT Special Edition (2016) vs Yamaha XS 250 DOHC (1984-) vs MV Agusta F4 750 Brutale CRC (2003) vs Hyosung RX 125 (2000-) vs Aprilia RX50 (2014-15) vs Harley-Davidson Aermacchi / Harley Davidson SXT 250 (1975)
Comparison technical specifications
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| Make: | Yamaha | BMW | Yamaha | MV Agusta | Hyosung | Aprilia | Harley-Davidson |
| Model: | FZR 1000 Geneses | R nineT Special Edition | XS 250 DOHC | F4 750 Brutale CRC | RX 125 | RX50 | Aermacchi / Harley Davidson SXT 250 |
| Years: | 1987 | 2016 | 1984- | 2003 | 2000- | 2014-15 | 1975 |
| Engine: | Four stroke, 35° forward inclined transverse four cylinder, DOHC, 5 valves per cylinder. | Four stroke, two cylinder horizontally opposed Boxer, two camshafts and four radially aligned valves per cylinder, central counterbalancer shaft. | Four stroke, 180° parallel twin, DOHC, 2 valves per cylinder | Four stroke, transverse four cylinder. DOHC, 4 valves per cylinder | Four stroke, single cylinder | Single cylinder, two stroke | Two stroke, single cylinder |
| Capacity: | 989 cc / 60.9 cu-in | 1170 cc / 71.4 cub in. | 248 cc / 15.2 cu-in | 749.4 cc / 45.7 cu-in | 124 cc / 7.6 cu-in | 49.9 cc / 3.04 cu in | 242.6 cc / 14.8 cu-in |
| Bore x Stroke: | 75 x 56 mm | 101 x 73 mm | 56 х 50.6 mm | 73.8 x 43.8 mm | 57 x 48.8 mm | 39.9 x 40 mm | 72 x 59.6 mm |
| Cooling System: | Liquid cooled | Air/Oil cooled | Air cooled | Liquid cooled | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 11.2:1 | 12.0:1 | 10.1:1 | 12.0:1 | 9.8;1 | 11.5:1 | 10.3:1 |
| Induction: | 4x 37mm BDS Mikuni carburetors | Electronic intake pipe injection / digital engine management with overrun cutoff, twin-spark ignition | 2x 32mm Mikuni carburetors | Fuel Injection, Multipoint electronic injection | Sung Lim PD | Dell'Orto PVHA 17.5 carburetor | 1x 32mm Dell'Orto carburetor |
| Starting: | Electric | Electric | Kick | Electric | Electric & kick | Kick | kick |
| Final Drive: | Chain, 532 'O'-ring type | Shaft | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | 41mm Telescopic infinite preload adjustable. | Upside-down telescopic forks, 46 mm fixed-fork-tube diameter | Telescopic forks | Upside-down telescopic hydraulic fork with rebound-compression damping and spring preload adjustment 49mm diameter | Upside down telescopic fork, 250mm wheel travel | Hydraulic fork, Ø 40 mm | Oil damper Ceriant telescopic fork |
| Rear Suspension: | Monoshock infinite preload adjust, 130mm wheel travel. | Cast aluminium single swinging arm with BMW Motorrad Paralever; central spring strut,spring preload fully adjustable by hook wrench, adjustable rebound-stage damping | Dual shocks, swing arm, 5-position preload adjustable | Progressive, with single sided swingarm, single shock absorber with rebound-compression damping and spring preload adjustment | Swingarm, 200mm wheel travel | High strength steel swingarm, hydraulic monoshock | Pivoted fork and Betor dampers 3-way adjustment |
| Front Brakes: | 2x 317 mm discs 4 piston calipers | 2 x 320 mm Foating brake discs, 4 piston radial calipers | Single 267mm disc | 2x 310mm discs 6 piston calipers | Single 240mm disc | Single stainless steel disc, Ø 260 mm, floating caliper | Single disc |
| Rear Brakes: | Single 264 mm disc 2 piston caliper | Single 265 mm disc, 2 piston floating caliper | 178mm Drum | Single 210mm disc 4 piston caliper | 130mm drum | Single disc, Ø 180 mm, floating caliper | Drum |
| Front Tyre: | 120/70 VR17 | 120/70 - ZR17 | 3.00-18 | 120/65 ZR17 | 90/90 -21 | 90/90-21 | 3.00 -21 |
| Rear Tyre: | 160/60 VR18 | 180/55 - ZR17 | 3.50-18 | 190/50 ZR17 | 4.10-18 | 110/80-18 | 4.00 -18 |