Honda CRF 450X (2007-08) vs Honda CB 650Z (1979-82) vs Honda CX 500TC Turbo (1981)
Comparison technical specifications
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| Make: | Honda | Honda | Honda |
| Model: | CRF 450X | CB 650Z | CX 500TC Turbo |
| Years: | 2007-08 | 1979-82 | 1981 |
| Engine: | Four stroke, single cylinder, DOHC, 4 valves | Four stroke, transverse four cylinder, SOHC, 2 valves per cylinder. | Four stroke, Turbo charged, longitudinal 800 V-twin cylinder, camshaft nestles at the base of the V between the cylinders. ,OHV, 4 valves per cylinder operated by pushrods |
| Capacity: | 449 cc / 27.4 cu-in | 626 cc / 38.2 cu-in | 498 cc / 30.3 cu-in |
| Bore x Stroke: | 96 x 62mm | 59.8 x 55.8 mm | 78 x 53 mm |
| Compression Ratio: | 12.0:1 | 9.0:1 | 7.2:1 |
| Induction: | Keihin 40mm flat-slide | 4x 28mm Keihin carburetors | Electronic fuel injection |
| Ignition: | CD with electronic advance and lighting coil | Transistorized | CDI |
| Starting: | Electric & kick | Electric | Electric |
| Max Power: | 44.8 hp / 33 kW @ 7500 rpm | 63 hp / 46.9 kW @ 9000 rpm | 82 hp / 59.9 kW @ 8000 rpm ( rear tyre 76 hp @ 8000 rpm ) |
| Max Torque: | 43 Nm / 4.38 kg-m @ 7000 rpm | 51.5 Nm / 38 ft-lb @ 8000 rpm | 79 Nm / 58.2 lb-ft @ 5000 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed |
| Final Drive: | #520 chain; 14T/40T | Chain | Shaft |
| Front Suspension: | Inverted fully adjustable 47mm Showa cartridge forks, 16-way rebound settings, 16-way compression | Adjustable Telehydraulic fork. | 37mm Showa, adjustments for TRAC anti-dive and air pressure |
| Rear Suspension: | Pro Link Showa single shock with 312mm of travel 17-way rebound settings, 13 low speed compression settings and 3.5 turns of high speed compression adjustment) | Swinging arm fork with adjustable shocks absorbers. | Honda Pro-Link, one Showa damper, adjustment for air pressure and rebound damping |
| Front Brakes: | Single 240mm disc 2 piston caliper | 2x 276mm discs | 2x 280mm discs |
| Rear Brakes: | Single 240mm disc | 180mm drum | Single 300mm disc |
| Front Tyre: | 80/100-21 | 3.50 -H19 | 100/90 V18 |
| Rear Tyre: | 110/100-18 | 4.50 -H17 | 120/90 V17 |
| Dry Weight: | 113 kg / 249 lbs | 198 kg / 436 lbs | 220 kg / 485 lbs |
| Fuel Capacity: | 7.2 Litres / 1.9 gal | 18 Litres / 4.7 US gal | 20 Litres / 5.2 US gal |