Last weekend I finally got around to opening the big box that had been sitting in my garage for over a year. It had the complete rear subframe that I bought back when I had just gotten the CLK, knowing that the rear end would need some serious upgrading.

It's got a Quaife HD LSD with 3.55 gears in a W211 E55 center section, Driveshaft Shop axles, solid diff mounts, and adjustable toe and camber arms.

Early impressions are mixed. I was told it came with 3.73's, but my TCU says otherwise. Apparently they are 3.55's. The rear end is also noisy AF. I know Richmond gears tend to be noisy, but I'm not sure the gears were setup properly.

I got a few runs at the track, and my best 60' dropped by about a tenth, but I'm still having 3-4 shift issues with my TCU so I don't have a good 1/4 mile time yet, but they definitely haven't gotten any worse.

 

Thats AWESOME!!! what are those R1 concept rotors?

 

Yes they are, but they are the solid CLK320 rotors instead of the CLK55 rotors for weight reduction.