Z1 Q50 / Q60 Rear Differential Brace
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starstarstarstarstar_half 4.9/5 - (49 Reviews)

Product Description

The Z1 Rear Differential Brace provides additional support for the rear differential in your Infiniti Q50 or Q60, preventing drivetrain damage and accelerated wear during spirited driving and improving power delivery.

Your Q's rear differential is mounted to the subframe using a single mounting stud and bushing. The factory bushings are prone to fail, and these issues are exacerbated on modified cars that are driven hard or launched frequently. This leads to excessive drivetrain movement and noise. In more extreme cases we have seen broken differential covers and/or mounting studs. Damage to the differential cover should be considered catastrophic since the cover also serves as the mounting point for the differential carrier and side bearings. If broken, the entire differential must be replaced. The cover cannot be replaced on its own. Additionally, the stock differential bushing is non-serviceable and requires the entire subframe be replaced. 

To prevent this failure, we have developed the strongest differential brace yet. By utilizing cast 304 stainless steel, we were able to manufacture a brace without the possibility of failure from welds or joints. The Z1 Differential Brace utilizes pre-existing holes in the bottom of the rear subframe to provide additional support. The additional support reduces strain on the differential bushing, cover, and stud while simultaneously aiding in the reduction of wheel hop and driveline slop.

  • Cast 304 Stainless Steel
  • Provides Additional Differential Support
  • Reduces Wear on Differential Bushings
  • Durable Jacking Point
  • Includes All Hardware

Fits:

  • 2014+ Infiniti Q50 Sedan
  • 2016+ Infiniti Q60 Coupe

Installation note: We have received some reports from customers stating that there is some difficulty installing on cars equipped with Fast Intentions exhaust. Upon further investigation, we've found that there is a tight tolerance between the two parts, and care should be taken when installing to ensure there is no interference between the two parts.

Z1 Q50 / Q60 Rear Differential Brace

Fits models: Q50 / Q60 2017+...
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$149.99

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Z1 Q50 / Q60 Rear Differential Brace
$149.99
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What our customers say

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Jung
December 10, 2024
Is good be very satisfied
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William
December 3, 2024
Diff brace is a great inexpensive add on. Wish I put on sooner definitely makes a difference!!
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Charles
September 23, 2024
Had this installed with the Fast Intentions exhaust for the Q50. It had no issue fitting at all. I did not expect much out of the brace since I am running stock bushings but this changed how my q50 drives! First there is no added noise but you do notice smaller noises such as the doors/mudflaps since the car is now more centered. It feels like my Q50 is now one solid power train especially when changing lanes and taking off. Even when you corner or go over speed bumps, during corners the wheel is more solid and the vehicle recovers quickly from turning. This is excellent :). For the reviews that worry about the mounting point/transfering wear to other parts of the subframe, this is well worth another subframe for the handling you get from driving and take off.
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Jose
August 6, 2024
Installed never had an issue performed as stated
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Juan
July 6, 2024
installation was a quickly and doest it's job
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Damien
June 7, 2024
Installing tomorrow can't wait
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Anton
June 2, 2024
Very simple installation, good kit.
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Glenn
May 29, 2024
The unit I received had a slightly egg shaped housing on the centre hole that attached to the diff. This forced the bolt to foul on the housing the during tightening process. Structurally very well made and easy enough to install.
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Jamaal
May 23, 2024
Great product, stiffened up my rear end on my rwd q50
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ULRIC
April 25, 2024
Got my order very quickly, box was well packaged and items were not damaged. I haven't had a chance to install them yet, but will soon, everyone in the Infiniti group I belong to raves about the difference this product makes, I can't wait to get it on!
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Tomas
April 10, 2024
Don't know that it does much but it's on there for peace of mind. Easy install
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Nick
April 8, 2024
Can notice the difference in between shifts, a lot less clunking and a bit more stable on a launch.
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Berny
April 8, 2024
Definitely worth the money, you can feel the rear stiffened up a bit more and the install was super easy just make sure you get the rear wheels off the ground so everything lines up.
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Leonard
February 28, 2024
Great quality and install only took minutes. Feels tighter in rear and definitely reduced wheel hop
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Robert
February 19, 2024
Easy to install, should make the rear diff bushing last longer and it connects to power better.
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Kevin
October 8, 2023
Another excellent product and well made. Easy to install. I have stock mid pipe and stillen axle back exhaust and I have no clearance issues. I chose this product to help the stock diff bushing last longer. So far so good. Less drivetrain movement means more power to the pavement
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Dante
July 11, 2023
Definitely makes a big difference for the better in how the car feels.
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Tyler
July 9, 2023
Easy install. Solid product. Took longer to jack up the car than to install brace. Good improvement
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Oleg
June 23, 2023
Takes the slop out from the rear of the driveline with the extra added protection for the failure - probe OEM diff bushing! Another amazing product from Z1!
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Steven
June 17, 2023
A+ This brace is one or if not the only one on the market with great design and great look. Easy to install. Recommended.
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Andres
June 14, 2023
easy to install and have been using it as a lifting point
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Thomas
June 4, 2023
Easy install. Well made, heavy duty.
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Jekiria
May 23, 2023
It’s works perfectly
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Shaun
May 16, 2023
Quality piece and finish. Easy install. Looks stock and no interference with differential drain bolt.
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Juan
March 5, 2023
Easy install took maybe about 30 min or less, shifts feel more firm worth the upgrade
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Johan
February 13, 2023
big difference in the feel of the car after install. great add on great build quality and saves you money in the long run
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Seyhan
January 28, 2023
Ordered this for my 2018 Q50 Red Sport RWD and after the install car feels more crisp on launching and no more wheel hop! Once again amazing product from an amazing company and people!
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Gerardo
December 7, 2022
Definitely recommend, I felt the difference the first couple of pulls, with the gear changes being smooth af. The suspension also feels more stable and responsive.
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Oren
December 7, 2022
Helps tighten up the rear end, felt a difference and helps put more power down!
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James
November 10, 2022
Easy install, to hopefully reduce stress on subframe bushing. Outstanding quality part.
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Aref
November 5, 2022
Much better grip for my Q50! Quality product highly recommended!
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Winston
September 5, 2022
This along with the differential bushing has made my vehicle remarkably stable. Fantastic product
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Douglas
August 24, 2022
The product came very quickly! It appears to be very well made, felt very sturdy. From my research I would say this is the best rear diff brace on the market. The install was actually very smooth, much smoother then a lot of the videos I watched, which I feel is a rare occurrence. The only reason for the four star is I thought I would feel a bigger difference in day to day driving as that is what most of the video reviews I watched stated. I am assuming my rear diff bushing may just be in better shape and as a result this part didn't yield the same daily driving feed back as other users. In either case did a few launches and it felt great! Definitely an improvement there!
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Vincent
July 25, 2022
Excellent quality brace!!! Super easy to install...fit perfectly!!! I installed this on a 2019 Q50S AWD and it gives the car a more planted and direct feel when pushing the car hard. When driving normal I really cannot tell a difference...no increase in NVH at all either. Well worth the money and time...especially when seeing how the rear differential can move so much under harsh conditions!
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Joel
July 21, 2022
Amazing product I recommend to all performance ppl
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Sean
June 22, 2022
My mechanic said it is a pretty slick piece.
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Josue
May 23, 2022
Great feeling and quality
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Patrick
May 22, 2022
Instant difference maker when it comes to stability in the rear end and no more dipping under hard acceleration, easy install, I currently have the Ark Grip exhaust for my 3.0T, perfect fitment, no clearance issues!
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Ricardo
May 18, 2022
This part definitely works well. It gives a nicer shift and feels sturdy! What I really like is the quality of the manufacture, clean, solid and it looks as it came with the car. A great investment for your car and diff!!
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Jose
May 16, 2022
I don't know why folks are saying it does not work with the Fast Intentions catback. I had my FI CBE on prior to this install. I did have to remove the end pipes in order to take of the 2 bolts that are ok the frame. After installing the brace, I was worried that I wouldn't have enough clearance after installing the end pipes back on. There was enough clearance with no contact when driving. Mind you, I installed this yesterday (5/15/22) and had my CBE on for a good 1500 miles. I posted my install on Q50 forums in the "What Did you Do to Your Q50 today" section if you want to take a look. Didn't know Z1 said it wouldn't fit with my CBE until other members were saying that it claimed it will not work with Fast Intention pipes. When I bought the brace, the warning was not there also. Bought it before the warning.
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Jose
May 16, 2022
This goes to the reviewer @Christopher, who said it won't fit with the Fast Intentions catback. Not sure which one you have but it fit perfectly fine with mine. I took the back pipes off, installed the brace, then reinstalled the pipes. At first I thought they would be hitting the bolts but they don't. You have to play with them to fit and mines worked perfectly fine. Go to the Q50 forums, I made a post on "What Did you Do to Your Q50 today" section on my install.
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John
May 16, 2022
Helped a lot of our trap speeds! Driveline feels significantly stiffer!
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Pablo
May 12, 2022
you feel the difference, especially if you run at high speed
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Jonathan
May 11, 2022
Very high quality product . Easy install and very clean oem + look. My rwd Q50 3..0t. S should’ve came like his from factory. No vibration and zero noise.
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Jose
April 30, 2022
So far Easy install car after installing diff brace no issues. I don’t know if I would need to removed later because I have in order a fast intentions exhaust since I was reading some reviews with fitments issues . For now 5 stars
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Christopher
April 12, 2022
Does not fit with aftermarket Fast Intentions exhaust unfortunately. Where the bracket bolts to the body of the vehicle is just too thick, causes the original brackets to make contact with the exhaust pipe. Spent an hour moving the exhaust around to get the bracket to fit but then the exhaust tips will not be centered properly in the bumper. Well made bracket just doesn't fit with my exhaust :(
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Dmitriy
April 10, 2022
Already had Z1 subframe collars installed, but adding this differential brace was what completely eliminated my wheel hop issues. On its own, the brace lowered my 60' by .02-.03s. Excellent product. A must if you are pushing higher power levels and especially if you are suffering from wheel hop. One minor issue: If you have a Fast Intentions Exhaust, there is no clearance for the heads of the bolts that attach the brace to the subframe. You will have to grind down the bolt heads about halfway to get around 2mm clearance so the exhaust doesn't hit the bolts.
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Andrew
March 24, 2022
Actually I just put it on. Sifting seems a lot smoother. The back end is a lot more rigid. So for so good.
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Christopher
March 14, 2022
Easy install car feels amazing after installing diff brace no issues