Aprilia SR50 (Minarelli Engine)

Athena Zuma Gears

Athena Zuma gears -  available in 14/42 (straight cut) and 15/50 (Helical cut) 

Fits all two stroke Zumas 1989 all the way to 2011

15 x 50 is a 22% gearing increase!

14 x 42 is a 33% gearing increase!