MOPED ARMY

E50 will always be faster on the top, the internal gearing on a two speed is lower, so a 18/38 gear ratio on the ZA is not as fast as an 18/38 on the E50. ZA50's can be made to handle power, but it has to be done with tighter tolerances than the E50. I love the ZA50 on my magnum, it rips out of the hole quickly, much better than an E50, but if you tune the clutch right on an e50, it is comparable.