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en.wikipedia.org/wiki/Motocross

Motocross is a form of off-road motorcycle racing held on enclosed off-road circuits. The sport ... Motocross was first evolved in the U.K. from motorcycle trials competitions, such as the ... In 1962, a 250 cc world championship was created. .... bikes converted for racing on tracks consisting three sections, flat dirt, dirt obstacles, ...

itstillruns.com/who-invented-dirt-bike-4706720.html

These bikes made especially for driving off-road were the result of an ... The DT-1 was the first dirt bike to almost be capable of being ridden in any kind of terrain ...

ijms.nova.edu/July2007/IJMS_Artcl.Youngblood.html

The Birth of the Dirt Bike: Technology and the Shift in Attitude toward American .... Moldable plastics also made the solid state ignition possible, vastly improving ... giving Husky and the two-stroke motor its first AMA Enduro Grand National ...

www.reference.com/sports-active-lifestyle/invented-dirt-bike-c983281dbd752a94

Though the popular manufacture of dirt bikes, or off-road style motorcycles, became more widespread in the 1960s, individual riders had been modifying their ...

www.mademan.com/mm/history-dirt-bikes.html

Feb 16, 2011 ... The history of dirt bikes is entwined with the history of motorcycles themselves. Dirt bikes, properly termed "Off-road motorcycles", are designed ...

ultimatemotorcycling.com/2014/02/27/history-motocross-racing-infographic

Feb 27, 2014 ... The history of Motocross can trace its roots back to the 1860s when ... Technological changes had to be made to make the bikes safer and faster for racing: ... Freestyle Racing – Two dirt bike routines judged by best tricks and ...

www.yamaha-motor.com/corporate/historyTimeline.aspx

Yamaha pioneered the very first single-shock, production motocross bikes. This was ... This was the first production Cruiser built by a Japanese manufacturer.

www.husqvarna-motorcycles.com/si/heritage

Husqvarna's first motorcycle was unveiled in 1903 - a 'motorised bicycle'. ... In the 1933 and 1934 road race season Husqvarna's made regular visits to the top step of the podium - a family tradition that has ... Dirtbikes become serious business.

honda-elsinore.alp-sys.com/publications/hondadirtbikes/index.html

The real Honda story, the one that's meaningful to us dirt bike freaks, started here .... The first real minibike from Honda made exclusively for the dirt was the Z50 ...