4-Poster Test Rigs

Moog 4-Poster Test Rigs, typically available in a 4-post as well as custom configurations, simulate vertical acceleration or displacement inputs of the automotive wheels. Also known as Tire Coupled Simulation and X-Poster Test Rigs, Moog can meet your needs through custom and standard solutions.

Our customers perform validation, durability, buzz, squeak and rattle (BSR), and noise, vibration, and harshness (NVH) testing using our 4-Poster Test Rigs for body in white and full vehicles. Improve your test lab operations with reliable and configurable solutions from Moog. 



  • Fatigue-rated hydrostatic servo hydraulic actuators
  • Vehicle loads up to 10,000 kg (22,000 lbs)
  • Provides strokes, speeds, accelerations and bandwidth needed for high performance
  • Manual or automatic track and wheelbase positioning
  • Stiff wheel pans with low friction tire patch
  • Integrated control hardware and software