CNC-machined and CNC-bored ring ensures precise fitment and slip fit on output housing for optimal alignment
Hex head bolts for clamping prevent stripping and simplify installation compared to traditional cap screws
Includes poly bushing halves, dom tubing sleeves, and all necessary grade 8 fasteners for complete installation
Bottom mounting design to crossmember enhances stability and reduces vibration
Compatible with Atlas, Dana 300, and NP231 transfer cases using advanced adapters
Summarized by Shop
The world's best-selling Transfer Case Support/Ring Mount for the Atlas Transfer Case!
Fits all transfer cases with a 3.9" output diameter
Fits Atlas, as well as Dana 300 or NP231 with advanced adapters HD tail shaft conversion
Designed to be bottom mounted to a crossmember. Do not mount upside down!
TMR Customs Atlas Transfer Case S
Fits
Atlas, Dana 300, NP231 (with adapters)
Output Diameter
3.9 in
Material
CNC-machined steel
Mounting
Bottom mount to crossmember
Included
Transfer case support ring, 2 poly bushing halves, dom tubing inner and outer sleeves, grade 8 fasteners, 2 mounting tabs
Color
Purple, Gray, Black, Silver
Summarized by Shop
5.0
24 ratings
5
4
3
2
1
Made it work-- best option for my situation
My engine is mounted low for stability so I have minimal room for mounting options and had to settle for an angle iron cross member vs mounted to a tube as the kit comes. A little extra grinding of the tabs and it all welded in and mounted great. This mount gives me confidence my Atlas won't fall out the back of my FJ40. I would recommend to anyone.
R
robert · April 9, 2026
1967 GMC K1500 4x4-Atlas transfer case
Worked great product!
B
Baisel · November 10, 2025
Great quality, fast shipping.
The only bad thing is I was hoping for the nice "TMR" logo to weld onto the tube I had seen in some other photos. It wasn't in the package, no biggie. It doesn't affect it any way, but I was hoping to have that logo on there. Everyone likes cool stuff on their rigs!
Keep up the good work, TMR Customs!