Why have 12speed when you can have 13?

[DavidCH]

OK... I noticed a trend coming out of China that they are producing one piece , high quality cmc machined 12 speed cassettes that are shimano hyper glide compatible ... so it's not too difficult to imagine a 13th 42t sprocket sitting at the end of it. Why have 12 speed when you can have 13?

Anyone know of any manufacturer that are producing an extender sprocket?

 

[Don1]

Have a closer look on AliExpress... There is a 13 speed mtb groupset that fit on hg hub.