Quinton "Rampage" Jackson entered a plea of guilty to one felony count of evading cops in a car chase last July.

The former UFC champ crashed into cars and almost hit pedestrians before the chase ended and officers removed him from his monster truck -- at gunpoint. Jackson was trying to escape in a vehicle that had a huge pic of him emblazoned on the side.

Based on the plea agreement, Jackson could get 6 months in jail. He'll also have to complete 200 hours of community service.