Do you know if those rims are still availableYep I thought so because 2005 & early 2006 NE-5 had the rubber band brake and then by 2007 it was upgraded to the Drum brake with shoes
Whizzer also sold a drum bake assembly kit so guys could upgrade their rubber band brake
By 2008 Whizzer used disc brakes on the NER and Ambassador
Whizzer also offered a disc brake conversion kit for the rear of previous bikes
But many (like me) chose to upgrade the F&R wheels to a better quality wheels
Worksman Cycles F&R drum brake clincher rim wheels with 10 gauge spokes .
While the Whizzer front drum brake wheel is very good, The rear wheel hub is prone to early failure and brakes were not very good
That hub was used on all rear wheels from 2005 - 2009 A drum or a disc adapter can be screwed onto the LH side
1999 - 2004 Whizzer's had coaster brake rear wheel & front drum brake