Completely replacing your drivetrain to save weight would be expensive. Dropping to 10 or 11 speed means a new shifter, cassette, derailleur. NX is one from bottom (SX is the lowest) level of SRAM's 12 speed options, meaning it is almost the heaviest.
[https://enduro-mtb.com/en/sram-nx-eagle-review/](https://enduro-mtb.com/en/sram-nx-eagle-review/)
Replacing the NX cassette with a GX or better starts dropping weight. If you have an NX drivetrain bike, you may have a heavy wheelset. You may also have an entry level fork, heavier fork. There are a lot of ways to drop weight, but they all cost money.
--Completely forgot that the NX is the HG driver, so scratch what I said.
Aug. 25, 2021, 7:56 a.m. - Alan Kaye
Completely replacing your drivetrain to save weight would be expensive. Dropping to 10 or 11 speed means a new shifter, cassette, derailleur. NX is one from bottom (SX is the lowest) level of SRAM's 12 speed options, meaning it is almost the heaviest. [https://enduro-mtb.com/en/sram-nx-eagle-review/](https://enduro-mtb.com/en/sram-nx-eagle-review/) Replacing the NX cassette with a GX or better starts dropping weight. If you have an NX drivetrain bike, you may have a heavy wheelset. You may also have an entry level fork, heavier fork. There are a lot of ways to drop weight, but they all cost money. --Completely forgot that the NX is the HG driver, so scratch what I said.