So the Can Am Sonic is EVO legal. The only one I have seen has a disc brake, so not standard.
Courtesy of CannedHam.com
Specifications:
Displacement 500 CC
Bore and stroke 89 mm x 79mm
Engine Cooling Air
Spark Plug NGK D8es-L
Carburetor 36mm Mikuni
Transmission: 5-Speed
Steering Rake 29.4 Degrees
(Castor):
Wheelbase: 58.5 inches
Ground Clearance: 11.0 inches
Weight (dry): 278 lbs.
Fuel Tank Capacity: 2.8 Gallons
Forks: 42mm Marazocchi
Fork Travel: 11.8 inches
Shocks: Ohlins Dual Shocks
Shock Travel: 12.9 inches
Front Wheel: 21 inches
Rear Wheel: 18 inches
Brakes Drum/Drum
Cost When New: $2,999