The SRAM Rival 1 rear derailleur By eliminating unwanted chain movement, X-HORIZON™ shifts faster, helps put an end to ghost shifting and reduces shift force and chain slap. And with CAGE LOCK™ technology, wheel removal and installation is pretty easy. Of course the rear thru axle is always a little bugger, but we won’t blame that on SRAM.
The cassette is on the Rival 1 is a a heavy boy. If racing or concerned about weight I would recommend upgrading to a Force level cassette and saving around 100 grams. Nice thing is, you have the option to use the Rival 1 until it is worn out then replace it with something a tad lighter.