The Evo I is identified by the 3 spoke rims and the 7 speed gearbox, grey lower panels, solid colours on the tail section.

The Evo II is identified by the 6 spoke rims and the 6 speed gearbox, solid colour lower panels, white area on the tail section.

Front and rear fairings were modified to look more like the C594, eight-spoke forged aluminium wheels were added, while speedometer, lights and mirrors were removed to reduce the overall weight.

On a technical level, the bike retains much the same rolling chassis as the Evo and the engine is still a 125 cc two-stroke, but has had several changes, notably a new Electronic Carburetion System (developed in conjunction with Dell'Orto) governing both fuel-air, oil-mix and ignition, allowing it to pass tougher Euro 3 emissions regulations.

Replacing the two-stroke's expansion chamber exhaust is a tiny, seemingly unbaffled system, its exit just visible at the rear of the underside fairing.

The Planet, unlike the Aprilia Tuono, has been given all new fairings including a fuel tank which can hinge upwards allowing access for space to store an open face helmet.