Segment: Enduro/Offroad
Production years: 2006, 2007
In 2007, Suzuki launched the RM-Z450, a two-stroke motorcycle suited for motocross racing where RM letters stand for Racing Model. The 2007 model received several updates in the engine department and chassis with improved low-to-mid range power deployment, while the Showa suspension was tweaked for an optimal response.
The 449cc engine updates consisted of a redesigned combustion chamber for a larger output, re-shaped intake ports, revised carburetor settings, optimized 3D-mapped ignition, and an exhaust pipe extended by 85 mm, all of which resulted in a low-to-mid range power output.
In the chassis department, the 2007 model received an updated twin-spar aluminum frame with thicker lower tubes and thinner tank rails, which created a perfect balance of rigidity and flexibility and increased cornering and straight-line performance. For improved traction and straight-line stability, the swingarm was revised by messing with the height and width of the main beam.
Both front and rear suspension got new settings, with the front and rear rotors redesigned for weight reduction. For better airflow to the air box, the side covers were vented, and for the visual aspect, the 2007 Suzuki RM-Z450 received aggressive graphics and a gripper seat.
The 449cc four-stroke single-cylinder engine with a power output of 58 hp at 8,800 rpm and 45 Nm (33 lb-ft) of torque at 7,600 rpm combined with a four-speed manual transmission and 100 kg (220 lbs) of weight, the bike registered a top speed of 113 kph (70 mph).
engine specs | Type: | four-stroke, single-cylinder, liquid cooled, DOHC, 4-valve | Displacement: | 449 cm3 | Bore X Stroke: | 3.8x2.5 in OR 97 mm | Compression Ratio: | 11.9:1 | Horsepower: | 58/8800 KW(hp)/RPM | Torque: | 33/7600 lb-ft/RPM OR 45/7600 Nm/RPM | Fuel System: | Keihin FCR40 Carburetor |
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transmission specs | Gearbox: | 4-speed, manual | Clutch: | Wet multi-disc, manual | Primary Drive: | - | Final Drive: | #520 chain |
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chassis specs | Frame: | Aluminium twin-spar | Front Suspension: | Telescopic, Showa cartridge-type, 22 compression and 20 rebound settings, 12.2 inches of wheel travel | Rear Suspension: | Showa link-type, spring preload fully-adjustable, 16 compression and 19 rebound settings, 12.2 inches of wheel travel | Front Brake: | Single hydraulic disc | Rear Brake: | Single hydraulic disc |
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dimension specs | Overall Length: | 86 in OR 2184 mm | Overall Width: | 32.7 in OR 831 mm | Seat Height: | 37.6 in OR 955 mm | Wheelbase: | 58.3 in OR 1481 mm | Ground Clearance: | 13.8 in OR 351 mm | Weight: | 220 lbs OR 100 kg | Fuel Capacity: | 1.8 gallons OR 6.8 L |
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tyres specs | Front: | 90/100-21 51M | Rear: | 120/90-19 57M |
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power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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