Output gear, 51-tooth, metal (requires #7785X input gear)
Bulkhead, rear (upper & lower), center differential (replacing #7727 & #7728 requires #5107A ball bearings (2))
Shock caps, aluminum (pink-anodized) (4) (fits all Ultra Shocks)
Spider gear shaft (2)/ spacers (4)/16x23.5x.5 stainless washer (2) (for #7781X aluminum differential carrier)
Driveshaft, center, 6061-T6 aluminum (blue-anodized) (189mm)
Stub axle assembly, rear, outer, extreme heavy duty (1) (left or right) (assembled with internal-splined half shaft)
Stub axle assembly, front, outer, extreme heavy duty (1) (left or right) (assembled with internal-splined half shaft)
Trailing arm (2) (assembled with hollow balls)
Skidplate, front (plastic)/ support plate (steel)
Stub axle, steel (use with #8550 driveshaft)
Suspension pin set (front) (3x51mm (2), 3x54mm (2), 3x93mm (2))
Weight, portal housing, brass (34 grams) (2)/ 2.5x8 CS (6) (requires #8251X, 8251R, 8251A, or 8251G outer portal housing)
Wheel nuts, splined, 17mm, serrated (red-anodized) (4)
Wheel nuts, splined, 17mm, serrated (black-anodized) (4)
Axle shaft, front, heavy duty (left & right) (requires #8064 front portal drive input gear)
Sway bar kit, 4-Tec® 2.0 (front and rear) (includes front and rear sway bars and adjustable linkage)
Connector, 25.2 volt to 14.8 volt jumper (allows a Traxxas® dual-battery 25.2 ESC to run on a single 14.8V battery pack)
Mounts, suspension arms (front & rear)/ hinge pin retainers (4)
