Here at MadMopeds we only supply parts that we are happy to use ourselves and within our workshop. You can be assured that these are very good quality.


To fit Rotax 122 engines as fitted to...

Aprilia RS125 

Aprilia SX125

Aprilia MX125

Aprilia RX125


DOES NOT FIT THE ROTAX 123 ENGINES AS FITTED TO SOME APRILIA RS125

DO YOUR RESEARCH AS WE CANNOT ACCEPT RETURNS ON THESE ITEMS SORRY 😊


Don't use old woodruff keys on these powerful engines especially when you change your crankshaft or if you notice any wear at all on your existing key.

If you have to remove the clutch basket and primary gear or the flywheel to inspect or change your stator check for wear and replace


These are very good engineering quality woodruff keys made from C45 or EN8 grade Medium carbon steel and not softer low carbon steel.


4 X 5 KEY


Dispatched with Royal Mail 2nd Class

1st class post is only £1 extra.

Please could you make your selection on purchase.


MadMopeds