Originally Posted by Jipe

This Sunrace hub is not an IGH, its a hub for a cassette, the Riese & Müller Birdy Touring has a pure 10s derailleur transmission (while the Pacific Cycles Birdy Touring is a 3x8s with an IGH, quite confusing same model name for different components).[…] For those like me who don't like that transmission, the other possibility is to use a SRAM XD or XDR compatible rear hub (the Birdy rear hub is a standard 135mm OLD hub with 5mm quick release) with a Ethirteen or 3T 11S 9-34t or 9-32t cassette same as mounted on the Helix Superlight.