Low Cost LSD Upgrade for Q50/Q60-Install w/ Pics
*Disclaimer- I do not work for or am affiliated with the vendor who makes this LSD upgrade kit. I simply wanted to be the guinea pig to try a lower cost option for an LSD upgrade*
I had looked at the AMS and Z1 diff upgrades and it seems like they were pretty expensive and in some cases required a core or shipping your center section back, so I began researching alternatives. I found a post where someone confirmed that the rearend in our cars is called the "R190" which has been around for quite some time in 1 form or another. When I searched for R190 LSD, I came across a company called Traction Concepts. They've been around for quite awhile in the racing scene (auto-x, rally, drag, etc.) and sell plate style upgrade kits to convert the 1 tire fire into an LSD for $350. They are made to fit inside the existing diff and apply spring pressure to the gears to keep both wheels turning when torque is applied, but still act like an open diff when there is light throttle or tight turns like in a parking lot. Being that you use the same ring/pinion gears, you don't have to worry preload/backlash/break-in etc. Install and go! I talked at length with their engineer who actually stated how robust the R190 rearend is, particularly with this upgrade. He said he has no concerns with 500/600/700 hp. Here is the process for the tear down and pics of the installed upgrade......
2016+ Premium, JB4, BMS HE, full DPs and Y-pipe.
Last edited by Ddnspider; 04-09-2019 at 03:01 PM.