Finally they are here ! 
This is an update to the MidiMax model pictured 60v 3000 watt - T8 chain to 420h. Stronger 420h chain which does not stretch and break like the T8 chain.
Kit includes:
4 new rear sprocket bolts
1 new rear 420 sprocket
1 new front 420 sprocket
1 new front sprocket nut
1 new 420h SFR chain to suit new sprockets
1 new master link to make fitting easier 
 
May fit other bikes - final Colour and pattern may differ, chain noise does increase