Ok so I get there’s probably more to it than pure weight, but both these rear derailleurs are 1x specific, medium cage and both are complete…

If you’re doing a new build and deliberating over Rival vs Force, or maybe you’ve damaged a derailleur and are thinking about changing from Rival to Force, hopefully this helps you… I’ve had both of these on the same bike and can’t tell the difference in the real world, both are faultless.

Rival can be had for £90, Force is circa £160

Yea but which jockey wheels last longer without siezing, and pivots last longer without going sloppy, and doesnt get bent by the first knock?

Trick question, theyre both SRAM.