LEGO MOC 42073 Power Trike by DJLF | Rebrickable - Build with LEGO
BrickLink - Part 42073c01 : LEGO Windup Motor 2 x 6 x 2 1/3 without Raised Shaft Base - Short Axle (Sports) [Motor, Non-Electric] - BrickLink Reference Catalog
Best Buy: LEGO Technic BASH! 42073 6210337
Up To 60% Off on LEGO Technic BASH! 42073 Buil... | Groupon Goods