Magnetic Mayhem (ペタンコ こうじょうアリーナ lit. Squashing Factory Arena in Japanese) is the fourth and final battle arena in Crash Nitro Kart and it is found in Teknee. The music here is the same as the one used for the race track Electron Avenue.
The arena returned in Crash Team Racing Nitro-Fueled, although due to the game lacking Nitro Kart's magnetic tyres feature, the two vertical segments have been replaced by flat areas.
- Number of Crystals: 20
- Time limit: 160 seconds
- The level is set underneath Electron Avenue, and it is quite warm and toasty. It is relatively easy despite the nitro crates, due to the fact that the almost all of the Crystals are in one area. The level has some machinery, but also is very quiet in ways and is a peaceful resting place for robots and racers.