From RWP Wiki
A sought-after item in Diddy Kong Racing.
The Wizpig Amulet is a type of item that's found in the game, Diddy Kong Racing and the remake. There are a total of four pieces of the amulet, with each piece being guarded by Tricky, Bluey, Bubbler, and Smokey who were entrusted by Wizpig with the pieces of the amulet after brainwashing the four. One can be obtained by beating a boss in a race twice during the regular races and the Silver Coin races.