This is a Traxxas T-Maxx Rear Assembly. This is the original narrow version with the round body posts. It includes:

Rear Shock Tower
Rear Bodsy Posts
Rear Bulkheads
Differential
Upper & Lower Suspension Arms
Drivelines
Knuckles
Skid Plate
Shocks
Bumper Mount
and Turnbuckles.

Everything is in excellent condition.

Moist of this is also compatible with the original narrow suspension E-Maxx.