Review: 42072 WHACK! | Brickset: LEGO set guide and database
LEGO 42072 WHACK! Instructions, Technic
LEGO 42072 Technic WHACK Racing Car Toy with Powerful Pull-Back Motor, High-Speed Action Vehicles Building Set by LEGO - Shop Online for Toys in Israel
LEGO Technic Race Cars bundle WHACK! and BASH! - 42072 and 42073 - 95% or better | eBay
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