Comparing the gearing upgrade options of the LEGO Technic 42099 4X4 X-treme Off-Roader - YouTube
LEGO MOC 42099 C model 'Buggy' by gyenesvi | Rebrickable - Build with LEGO
Amazon.com: BRIKSMAX Led Lighting Kit for Technic 4X4 X-treme Off-Roader - Compatible with Lego 42099 Building Blocks Model- Not Include The Lego Set : Toys & Games