2024 F150 Xlt Fx4 Review. One is the fx4 package, which adds a locking rear axle, retuned shock absorbers, underbody skidplates, a rock crawl drive mode, and hill descent control. Unleash true power with the available 3.5l powerboost® full hybrid v6 engine & 2.4kw pro power onboard™.

One is the fx4 package, which adds a locking rear axle, retuned shock absorbers, underbody skidplates, a rock crawl drive mode, and hill descent control. Bye, bye base engine—hello new tailgate.