Lego technic junior group - Lego technic 9398 MOC (3) NOTE:no instructions | Facebook
Amazon.com: LEGO Technic 9398 Rock Crawler by LEGO Technic : Toys & Games
Ultimate upgrade for the 9398 4x4 crawler with pendulum steering (no servo needed). I also made a pendulum steering file in the rebrickable link you can download and have a closer look
LEGO - Technic Remote Control - 9398 - Car 4x4 Crawler - - Catawiki