The Rotax 125 MAX DD2 EVO combines a 2-speed paddle-shift gearbox with a chainless drive. Steel gear ratios run submerged in oil and form a wet clutch, replacing the usual chain and sprocket. DD2 chassis are built with front brakes and a rear tire protection system to improve safety, so check that your chassis is a DD2 design before you order.

Electronic power valve and carburetion

The DD2 EVO’s electronic power valve opens at 8,800 rpm or 9,100 rpm, depending on driver preference. The standard carburetor setup covers nearly all operating conditions, and for extreme conditions you can change the jetting between sessions instead of tuning while racing. The engine has an integrated electric starter with ignition switch.

Accessories included

Complete airbox
Dell’Orto VHSB 34 XS carburetor, fuel pump and fuel filter
Exhaust system and radiator
Battery, battery cradle and battery charger
Ignition coil, cable harness and ON/OFF/START switch
Shift paddle setup for the steering wheel

Prime Bike Parts tests its products before they ship, and we ship securely to almost all countries. Check your series rulebook to confirm this engine is legal for your class, and contact us if you need help with fitment or setup.

Type	125cc, single cylinder, 2-stroke, water-cooled
Max power	25 kW / 34hp @ 12,000 rpm
Max torque	22 N·m (16.2 lb-ft) @ 10,500 rpm
Transmission	2-speed gearbox, shift paddle on steering wheel; chainless drive with oil-immersed gears and wet clutch
Power valve	Electronic, opens at 8,800 or 9,100 rpm
Carburetor	Dell’Orto VHSB 34 XS
Starting	Electric
Weight, bare engine	16.8 kg (37.0 lbs)
Weight, with complete power pack	28.8 kg (63.5 lbs)
Chassis compatibility	1,040 mm wheelbase, DD2 chassis with front brakes
Recommended driver age	15 and older (varies by national regulations)