RTS offers superior transmission yokes in a heavy-duty forged 4340 chromoly construction with a 1350 universal size to fit most popular transmissions. Fully heat-treated to achieve optimal tensile strength, RTS’ transmission yokes are then machined to ensure concentricity and balance for ideal driveshaft operation. Plus, RTS also offers specially heat-treated (case-hardened) yokes for your roller-bearing extension housings. Features Forged 4340 chromoly Maximum strength for extreme applications Additional strength in critical areas Black oxide finish for corrosion resistance RTS quality GM Applications Powerglide TH200 4R TH350 TH700 R4 T56 4L60 4L60E Muncie M20 / M21 / M22 Super T-10 (1st design)