Yamaha XT 660X (2008) vs Yamaha XJ 400S Diversion (1991-) vs Harley-Davidson Harley Davidson VRSCF V-Rod Muscle (2011-12) vs Honda CBR1000RR-R Fireblade SP (2022)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Harley-Davidson | Honda |
| Model: | XT 660X | XJ 400S Diversion | Harley Davidson VRSCF V-Rod Muscle | CBR1000RR-R Fireblade SP |
| Years: | 2008 | 1991- | 2011-12 | 2022 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, 60° V-twin, DOHC, 4 valve per cylinder. | Four stroke, transverse 4 cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 659 cc/ 40.2 cu-in | 399 cc / 24.2 cu-in | 1247 cc / 76.1 cu in | 999.9 cc / 61 cu-in |
| Bore x Stroke: | 100 x 84 mm | 55 х 47 mm | 105 x 72 mm | 81 x 48.5 mm |
| Compression Ratio: | 10: 1 | 10.7:1 | 11.5;1 | 13.4:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled | Liquid cooled |
| Induction: | Fuel injection, 44 mm throttle body | 4x 30mm CV | Electronic Sequential Port Fuel Injection | Programmed Dual Stage Fuel Injection (PGM-DSFI) with 52mm throttle bodies, Denso 12-hole injectors |
| Ignition: | TCI | CDI | Digital CDI | Digital transistorized with electronic advance |
| Starting: | Electric | Electric | Electric | Electric |
| Max Torque: | 58.4 Nm / 5.7 kgf-m @ 5250 rpm | 3.5 kgf-m / 25.3 lb-ft @ 7000 rpm | 86 ft/lbs / 117 Nm @ 6500 rpm | 113 Nm / 82.6 lb-ft @ 12500 |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 6 speed |
| Final Drive: | Chain | Chain | Belt | Chain |
| Front Suspension: | 43 mm Telescopic forks, | Telescopic forks | Huge 43mm forks | Öhlins NPX S-EC 43mm telescopic fork with preload, compression and rebound adjustments |
| Rear Suspension: | Oscillating arm standard Monocross. | Dual shocks preload adjustable. | Twin coil over adjustable shock, 70mm wheel travel | Öhlins TTX36 S-EC Pro-Link swingarm with preload, compression and rebound damping |
| Front Brakes: | Single 320mm disc 4 piston caliper | Single discs 2 piston caliper | 2x 300mm discs 4 piston calipers | 2x 330mm discs with radially mounted 4-piston Brembo Stylema calipers |
| Rear Brakes: | Single 245mm disc 1 piston caliper | Single discs 2 piston caliper | Single 300mm disc 4 piston caliper | Single 220mm disc with 2-piston Brembo caliper |
| Front Tyre: | 120/700-17 | 110/70-17 | 120/70ZR-19 | 120/70-ZR17 M/C (58W) |
| Rear Tyre: | 160/60-17 | 130/70-18 | 240/40R-18 | 200/55-ZR17 M/C (78W) |
| Fuel Capacity: | 15 Litres / 3.9 gal | 18 Litres / 4.7 US gal | 18.9 Litres / 5.0 gal | 16 Litres / 4.3 US gal |