Have you ever tried finding a 104BCD spider for a Gates Carbon Drive 39t sprocket that fits the latest SRAM MTB cranks with an 8-bolt DirectMount interface? We have, and we couldn’t find any, so we made our own.
This spider will give you the correct offset to run a belt drive setup on a standard Rohloff hub (not the A12 version) with a 55 or 53.5mm belt line.
It comes in all the colours you would ever want – i.e. black.
Buy it. Be happy. You’re welcome.
Rohloff builds are available on both the GMX+ and UpRock V2
GMX+UpRock V2





