Probably a stupid question and I'm fairly sure I already know the answer, but I'd like confirmation if anyone is able to provide it...
Is the spline pattern identical on these two SRAM 13T sprockets? The only difference, as far as I can tell, even after having read the downloadable data sheet, is that one is for a 1/8" chain, the other for a 3/32" chain:
QRSPR13 - 13T for 1/8" chain
http://brompton.com/spares/part/1329/13t-r-sprkt-1-8-3-spline-3mm-3-spdQRSPR13DR - 13T for 3/32" chain
http://brompton.com/spares/part/1331/13t-r-sprkt-3-32-3-spline-3mm-3-spd-and-sram-6-spd(I'm asking because my chain needs replacing. I have a 3/32" chain I can use but the current sprocket is the 1/8" version above. It would be cheaper to replace the sprocket than buy a 1/8" chain. Plus replacing the sprocket is probably a good idea anyway. Tbh, I'm fairly sure I've used a 3/32" sprocket in the past with no problems.)