Here is what I was told when I asked the same question. The rear axle that comes in a Rubicon is much stronger than previous rear's. It's not cost effective for them to make a 44 in that case because it does not take the beating like the front. Most people who upgrade the rear axle other than going with chrome molly axle shafts goes to a 60 which Dynatrac or Dana now make a 5 lug instead of a 6 or 8 lug. I'm super with my Mopar Performance Rear 44 with a Rusty's Trust added.Why don’t Dana, Dynatrac, etc. make full D44 rear axle assemblies? They all have them for the front, but only 60 or 80 series for the rear.
Good day when you did the front axle to a dana 44 and you left the rear with the dana 35 but re geared it? I am in this scenario and was wondering if this was possible and how it worked?I have a 2018 Sahara JLU. I upgraded my front axle first (March 2019) since it seems to take the most punishment when going off-road. I have a Dana Ultimate 44 Axle with 4.88 gears. I did change to rear 200 axle to 4.88 gears at that time. Recently (Aug 2019) I put a new Mopar Rubicon 44 / 220 rear axle in with the 4.88 gears also. Both now have E-Lockers.
What ever your axle combination is front and rear you need to make sure their gear ratios are identical else when you put it in 4wd the front tires will spin at a different speed than the rear causing things to bind and blow upGood day when you did the front axle to a dana 44 and you left the rear with the dana 35 but re geared it? I am in this scenario and was wondering if this was possible and how it worked?