10 THINGS YOU NEED TO KNOW ABOUT HOPPING UP A FOUR-STROKE

Since the day that Nicolaus August Otto fired up the first four-stroke engine in 1876, four-stroke designers have been hopping them up

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	Dirt Bike	Dirt Wheels	ATV Action	MBA	RBA	BMX PLUS!
Copyright Hi-Torque Publications, Inc. All rights reserved. motocross news -motocross bike test - motocross features -motocross product reviews -motocross photos motocross videos Honda MX Tests - Husqvarna MX Test - Kawasaki MX Tests - KTM MX Tests - Suzuki MX Tests - Yamaha MX Tests WARNING: Much of the action depicted in this magazine is potentially dangerous. Virtually all of the riders seen in our photos are experienced experts or professionals. Do not attempt to duplicate any stunts that are beyond your own capabilities. Always wear the appropriate safety gear.