Honda CRF 450X (2007-08) vs Honda CB 650Z (1979-82) vs Honda CX 500TC Turbo (1981) vs Honda CBR 900RR Fireblade (CBR929RR) (2001) vs Honda SH 125i (2024)
Comparison technical specifications
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| Make: | Honda | Honda | Honda | Honda | Honda |
| Model: | CRF 450X | CB 650Z | CX 500TC Turbo | CBR 900RR Fireblade (CBR929RR) | SH 125i |
| Years: | 2007-08 | 1979-82 | 1981 | 2001 | 2024 |
| 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 | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity: | 449 cc / 27.4 cu-in | 626 cc / 38.2 cu-in | 498 cc / 30.3 cu-in | 929 cc / 58.7 cub. in | 125 cc / 7.6 cu-in |
| Bore x Stroke: | 96 x 62mm | 59.8 x 55.8 mm | 78 x 53 mm | 74 x 54 mm | 53.5 x 55.5 mm |
| Compression Ratio: | 12.0:1 | 9.0:1 | 7.2:1 | 11.3:1 | 11.5:1 |
| Induction: | Keihin 40mm flat-slide | 4x 28mm Keihin carburetors | Electronic fuel injection | PGM-FI (fuel-injection) with automatic choke | PGM-FI electronic fuel injection |
| Ignition: | CD with electronic advance and lighting coil | Transistorized | CDI | Computer-controlled digital, 3D mapping | Fully transistorised ignition |
| Starting: | Electric & kick | Electric | Electric | Electronic | 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 ) | 111.8 kW / 152 hp @ 10750rpm | 9.6 kW / 12.9 hp @ 8250 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 | 103 Nm / 10.5 kg fm / 76 lb.ft @ 9000rpm | 12 Nm / 2.7 lbf @ 6500 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 6 Speed | CVT |
| Final Drive: | #520 chain; 14T/40T | Chain | Shaft | # 525 chain, 108 links | V-Belt |
| 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 | 43mm inverted telescopic fork with stepless preload, compression and rebound adjustment | 33mm Telescopic fork |
| 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 | Pro-Link with gas-charged H.M.A.S. damper featuring 13-step preload and stepless compression and rebound damping adjustment | Dual-damper unit swing arm, 5 stage adjustment |
| Front Tyre: | 80/100-21 | 3.50 -H19 | 100/90 V18 | 120/70 ZR17 | 100/80 -16 |
| Rear Tyre: | 110/100-18 | 4.50 -H17 | 120/90 V17 | 190/50 ZR17 | 120/80 -16 |
| Fuel Capacity: | 7.2 Litres / 1.9 gal | 18 Litres / 4.7 US gal | 20 Litres / 5.2 US gal | 18 Litres / 4.8 US gal | 7 Litres / 1.85 US gal |