Lego Technic combinations: beast on the left side is 42072+42073 (BASH and WHACK) while beauty on the right side is 42058+42059 (STUNT TRUCK and STUNT BIKE). : r/lego
MOC] 42072 B Model - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
LEGO 42072 Technic Whack Racing Car Toy with Powerful Pull-Back Motor, High-Speed Action Vehicles Building Set - Shop Imported Products from USA to India Online - iBhejo
LEGO 42072 Technic WHACK! Building Toy | eBay
Best Buy: LEGO Technic WHACK! 42072 6210331
42072 WHACK - LEGO instructions and catalogs library