Just picked up my Sept '17 X100D from the service center and the shudder is gone (limited testing - 20 miles or so drive home and only a couple of launches). This is my third half-shaft replacement in my 23 months / 52k miles of ownership. The first two service visits had the original revision half shaft replacements only, and it did solve the problem... for a while. So only time will tell if the newer rev half shafts and the addition of the clevis mount will solve the problem long term. I'm a glass if half-full person so....
The work was done under an extended service agreement which I purchased just as a broke 50k miles two months ago. They comped the $200 deductible so it didn't cost anything to repair. I didn't ask for the comp, but would have if they had asked for payment since this shudder predated 50k original warranty limit.
Here's the text from the service invoice:
Concern: Customer States: Looking to have warranty repair of acceleration shudder done per SB-19-39-001
(
https://static.nhtsa.gov/odi/tsbs/2019/MC-10162295-9999.pdf) if you have the parts available.
Technician removed and replaced front half shafts and all related hardware. Test drove and verified no shudder or
vibration present.
Correction: Inspect Vehicle, Replace LH Front Drive Unit Clevis Mount And
Both Front Halfshafts (Model X)
Parts Replaced or Added
Part Quantity
NUT HF M10x1.25 PC10 PTP COLORED(2007090-00-C) 2.0
NUT HF M14x2.00 [10]-G720(2007073) 2.0
BOLT HF M14x102 PC109(1056323-00-A) 2.0
NUT PLATE ASSY,LHS MTR MNT,SDU-F(1055663-00-A) 1.0
CLVS ASSY,DBL ISO,LHS MTR MNT,SDU-F(1055366-00-
H)
1.0
FRGD CLVS ASSY,DBL ISO,LHS MTR MNT,SDU-F
(1055366-00-F)
1.0
HALFSHAFT, FR RH, MODEL X(1027115-00-D) 1.0
HALFSHAFT, FR LH, MODEL X(1027111-00-D) 1.0
NUT HF M24x1.5 [8.8] ZnFl-W(1020297-00-A) 2.0
WASHER SAFETY M24x39(1020296-00-B) 2.0
BOLT HF M14x2.00x50 DP [10.9] ZnAl-W(1009169-00-A) 2.0
BOLT HF M8x30 PC109 ADH MAT(1008722-00-A) 4.0
NUT HFPT M14-2.00 [10] ZnNi-W(1004356-00-B) 2.0
NUT HF M10x1.50 [10] ZnAl-W(1004351-00-A) 2.0
BLT BTNHD M10x1.50x57 [10.9] ZnAl-W(1004350-00-A) 2.0