Originally Posted by
Marcus_Ti
Shimano says the 41T capacity RDs are for 1x systems.
RD-RX400 SHIMANO SHADOW RD+
- Similar stabilizer technology and design as premium GRX series
- Compatible with existing Shimano mechanical 10-speed road ST
- Max. cassette range: 36-30T low)
- Max. front chainring range: 16T
- 41T capacity
- 303 g
This one shows a 16T chainring range for the crankset. I believe Shimano is resisting the dedicated 1x systems. In addition that that, who would by a 1x system with a 36T max low cassette limitation? Finally, a 1x system with a maximum of a 36T cassette & a 41T capacity would give you a -5T high gear.