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
LEGO 42072 WHACK! review | Brickset
LEGO Technic Whack! & BASH! 42072 42073 bundle NEW! pull Back Action! | eBay
REVIEW] 42073: BASH! - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
WHACK! 42072 - LEGO® Technic Sets - LEGO.com for kids
Amazon.com: LEGO Technic WHACK! 42072 Building Kit with Pull Back Toy Stunt Car, Popular Girls and Boys Engineering Toy for Creative Play (135 Pieces) : Toys & Games
LEGO Technic WHACK! 42072 Building Kit with Stunt Car (135 Pieces) - Walmart.com
Amazon.com: LEGO Technic BASH! 42073 Building Kit (139 Pieces) : Toys & Games