OSSA EXPLORER 250 | APRILIA RS 457 |
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engine specs | |
Type | |
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Two-stroke single cylinder inverted admission direct reed crankcase | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
Displacement | |
247.7 cm3 | - |
Bore X Stroke | |
2.9x2.4 in OR 74 mm | - |
Horsepower | |
- | 48/- KW(hp)/RPM |
Fuel System | |
EFI Kokusan Battery-less System | - |
transmission specs | |
Gearbox | |
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6-Speed | - |
Clutch | |
Hydraulic | - |
Primary Drive | |
Gears | - |
Final Drive | |
Chain | - |
chassis specs | |
Frame | |
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Tubular profile CR-Mo steel with pipe of cast aluminum and forged aluminum lower | Aluminium frame |
Front Suspension | |
Olle hydraulic fork with 40 mm sliders. Adjustable rebound and compression damping | - |
Rear Suspension | |
Progressive hydraulic monoshock Olle with adjustable preload | - |
Front Brake | |
Disc diameter 185 mm 4-piston calliper | - |
Rear Brake | |
Disc diameter 180 mm 2-piston calliper | - |
dimension specs | |
Seat Height | |
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32.3 in OR 820 mm | - |
Ground Clearance | |
13.4 in OR 340 mm | - |
Weight | |
175 lbs OR 79 kg | 351 lbs OR 159 kg |
Fuel Capacity | |
2 gallons OR 7.6 L | - |
Wheelbase | |
52.3 in OR 1328 mm | - |
tyres specs | |
Front | |
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2.75 x21 | - |
Rear | |
4.00 x18 | - |