Crash Tag Team Racing - High speed mode

Japanese Crash:
Hold L R and press X, B, X, B at the main menu.

One hit knock outs:
Hold L R and press A, B2, A at the main menu.

Chicken heads:
Hold L R and press A, B2, X at the main menu.

Disable HUD:
Hold L R and press A, X, Y, B at the main menu.

Evil Crash Costume:
When you find Cortex on Mystery Island there's an owl shaped lamp behind him. Hit the body-slam switch and it will rise up. Enter the cave, and go right. Have a chat with thethe drone at the top of the island and shell out 2000 coins to get the costume.

Baby Crash costume:
Collect all the Die-O-Ramas to unlock the Baby Crash costume.

Play as Crunch Bandicoot:
Give Cruch Bandicoot 2,500 Coins at Midway to unlock him.

Play as N. Gin:
Give N. Gin the Green Plutonium at Midway to unlock him.

Play as Nina Cortex:
Giver Nina Cortex the keys at Midway to unlock her.

Play as Pasadena Opossum:
Give Pasadena Opossum one Power Crystal at Midway to unlock him.

Play as Von Clutch:
Give Von Clutch one Power Crystal at Midway to unlock him.

Skeleton Crash costume:
Talk to the Astro Land worker near the stunt arena to get the Skeleton Crash costume for 4,000 Coins.

Third tier kart weapons:
Spend one Power Crystal at Midway to buy the following character's third tier kart weapon from them: Coco, Crash, Crunch, N. Cortex, N. Gin, Nina, Pasadena, and Von Clutch.