10t is available in SRAM / Sunrace / Shimano. Just need the right freehub/body. On Shimano microspline, and SRAM an XD driver. I do not have a cadence sensor so cannot give you accurate figures. Maybe I must just clarify my point before the thread turns into a circus. 1. I injured my knee with low cadence / high power input through pedal strokes when I wasn't fit enough to do so.. I was off the bike for a few years and thought I was a hero the second time I got on it again. I was unable to ride more than 30km for a year after that due to the left knee pain which got worse the further I rode, and I had to see a biokineticist for around 6 months to help with the pain and gaining strength back through exercise. I realized, and it was obvious, lower cadence and higher power input made my knee hurt after this. This is why I had to learn to ride on a higher cadence with less power input. 2. I see many guys on here suggesting they spin out on 1x12 setups with anything less than a 34t chainring. I simply cannot believe it. It is like when you are at a braai....Every guy is the best driver, the best braaier, has the hottest chick, car's the lightest on fuel etc. Are we talking about a road bike or a mountain bike here??? The last time I checked, when doing your normal XC / trail style riding, you normally average anywhere from around the 14km/h - 22km/h mark per ride from start to finish depending on your fitness. The time on the trail when you will exceed these speeds and spin out, is probably less than 5% of your ride. So why the fuss about spinning out? This is why I commented that I can comfortably spin at 50km/h with a 32t, 10 - 50 setup. My legs still turn and I still apply pressure down on the pedals at these speeds, but this is on 5% or less of my ride. I am by no means suggesting I ride at 50km/h from start to finish. Once again, why the hell are so many okes fussing about spinning out??? Where do you ride that you spin out so much during your XC / trail outing? Or are there just so many pro riders on this forum. 3. With regards to cadence, no cadence sensor so just using the omnicalculator: On my setup, 50km/h will require a cadence of 97rpm. On a 34t and 11t back, it will require 100rpm. However, considering this cadence is only required (If ever) for very short distances or periods of time, it is not a problem at all. Just cannot believe so many people claiming they are spinning out. So you spin out on 2% of your ride, what is the issue? Do not discourage another from going for a 32t if he needs help with his climbing. The guy won't spin out for 98% of his ride, and unlikely for the other 2% as well. I do a club ride every Saturday and most of the time my cadence is higher than the majority of the other riders. No cadence sensor to prove it, just my eyes looking at how fast my legs are spinning versus the rest of the bunch. Trust me, my knee has no issues with maintaining a higher cadence. It will have issues if I ride at a lower cadence with a high power input. This being for normal speeds during a club ride (Around 16km/h - 17km'h average over 50km's), not 50km/h over 50km, just 50km/h for the short periods / distances during the 50km club ride.