| BETA Evo 80 Jr | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| single cylinder, 2-stroke, liquid-cooled | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 79.6 cm3 | - |
| Bore X Stroke | |
| 1.9x1.7 in OR 48 mm | - |
| Compression Ratio | |
| 14:7:1 | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Fuel System | |
| DellOrto 21mm carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-speed | - |
| Clutch | |
| wet multi-disc, manual | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| steel | Aluminium frame |
| Front Suspension | |
| 33mm Paioli | - |
| Rear Suspension | |
| Single shock, adjustable dampening, spring preload | - |
| Front Brake | |
| 175mm rotor with 4-piston caliper | - |
| Rear Brake | |
| 150mm rotor with twin-piston caliper | - |
| dimension specs | |
| Seat Height | |
|---|---|
| 24.4 in OR 620 mm | - |
| Ground Clearance | |
| 11.8 in OR 300 mm | - |
| Weight | |
| 132 lbs OR 60 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 0.7 gallons OR 2.6 L | - |
| Wheelbase | |
| 47.6 in OR 1209 mm | - |
| tyres specs | |
| Front | |
|---|---|
| Trial type 19 | - |
| Rear | |
| Trial type 17 | - |
