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Tracking down all of the pieces for a ring and pinion upgrade can be a chore, but not anymore! This complete package from Nitro Gear includes front AND rear gears, as well as a complete Master Installation Kit for both differentials.
In the past, when it was time to upgrade the gearing in your axles, you would have to get a multitude of different parts, sometimes from different suppliers to get the job done. Obviously, you need the ring and pinions, but then you needed bearings, seals, shims, gear bolts, and the list goes on. NO LONGER! Nitro Gear has simplified this process with their complete packages that includes everything you need (besides oil and a pair of hands) to upgrade the ring and pinions in your front and rear differentials.
IMPORTANT NOTE: The 4.30 ratio is the only gear package that will include an 11.8" ring gear. All other gear packages at this time will include an 11.5" ring gear with the appropriate bearing for installation into an 11.8" factory rear end.
AAM 11.8" Rear Axle Specifications - Beginning in mid-model year 2013, Ram and GM began using an AAM 11.8" rear end, along side the 11.5" that had been in service for the previous model years. Before ordering, please confirm your rear axle by comparing to the image below of a Ram 11.8" and if yours does not match this, you very likely have the 11.5. Please see our Related Products section below for 11.5" ring and pinion options.
- ManufacturerNitro Gear & Axle
- MPNGPRAM2500-4.11 | GPRAM2500-3.73 | GPRAM2500-4.30 | GPRAM2500-4.56 | GPRAM2500-4.88 | GPRAM2500-5.13
- Some 2017-2018 models will require a front ring gear spacer.
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Will these work on a 2018 ram 2500 with a 6.4 hemi in it??
Yes those would work on that application. The newer Hemi truck use the same axle and not smaller like previous generations.
2013.5-2017 6.7L Dodge Ram Cummins without Aisin Transmission: Why? what does the tranny have to do with rear ends??
The install package changes slightly. The bearing are a little different.
So these do not fit a AAM 11.5??
Correct, will have the wrong bearings to go into a 11.5. You would need a gear package for 11.5.
I have 2015 RAM 2500 6.7L. Crew Cab, SLT 4WD. I'm using a Gear Ratio of 3.42, with tires 37x12.5R17. What would be correct ratio for that tire SIZE??
Depending on transmission, max cruising speed, and other supporting modifications. We would recommend you into the 4:10 or 4:30 ratios.
I have a 2018 2500 with 6.7 and a 68rfe Sitting on 37's will the 4:30's work??
We would recommend 4.10 or 4.30 ratio yes.
I have 2016 Ram 2500 6.7 CTD 6 speed auto. Running 35s right now, probably going to 37s next. To be safe with both 35s & 37s would you recommend 4.10s for a daily driver and medium/heavy tow rig 8k-16k lbs trailers? And is this the exact package I would need or is this not compatible for my setup??
4.56 if you tow
18 ram 2500, has 35s on it may go to 37s-40s in the future what would be the best ratio? I drive a lot of highway and don't want to revved out doing 65-70, most it tows is 12-13k occasionally.?
It might be best to change ratios when you change gears. Most of those trucks came with a 3.73 which is still ok for a 35inch tire. Anything that you would install that would work with 37's or 40's will be revved out on the highway for 35's. DppSands
Do y’all do the cryogenic hardening on your gears??
They are 8620 steel gears with triple lap heat treatment. -MC