There is nothing quite like the sound of a 125cc engine being held wide open on a motocross track. Senior Test Editor Kris Keefer takes you back in time for a lap around Competitive Edge MX Park in Hesperia, California. Sit down, grab a drink, turn the volume up and listen to the sweet sound of a pre-mixed burning 2006 Suzuki RM125 turned 134cc'd tiddler.

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