about as big as they always was
Motocross is a big sport?
Depending on the length of his/her inner leg is depending what size bike he/she can fit on but the majority of 12 year olds ride a 85 (small wheel or big wheel depending on the length of the riders inner leg)
AMA Motocross revenue for 2008 was reported to be 559 million.
For professional motocross, the biggest bike that is allowed to be raced is a 450 four-stroke. For local race purposes there is a Vet class that allows any size bike to be raced (usually up to 525 since that's the biggest motocross bike that KTM makes).
What do you mean? I can probably answer any question involving Motocross (Motorbike racing) but do you mean how do you participate? Well, the way I race, is I go to big national races, where a bunch of other people race too, against me, but only in my class, (bikes around my size and people my age) and we race dirt bikes, basically some people only race for the fun of it, but some people only race for the prizes. If this wasn't your question or not a good answer, I'm sorry.
1969
yeah you can BUT your going to have to buy a new swing-arm new wheels+tyres new sprocket and a new rear brake line. hope this has helped.
Yes, both in physical size and hp.
The big wheel was invented in 1969 , here's a link http://www.retroland.com/pages/retropedia/toys/item/2409/
Supercross= usually races inside stadiums, unless it takes place at a speedway, like at the Daytona supercross. Supercross utilizes a single race format, meaning one final moto. To get to this final moto, the riders must qualify through a series of heat races. Supercross is fast, tight and technical. They have big jumps and rythem sections. Supercross usually races on Saturday nights... Motocross= Motocross races are held on tracks that are permanent, meaning, it isn't torn down after every race, like a supercross track is. The track is longer, wider, and most of them have natural terrain. A lot of outdoor tracks have hills and tricky sections, like sand or off camber corners. They have some big jumps. Motocross uses a 2 moto format. Like supercross, a rider must qualify through a series of heat races. Like I said before the motocross series uses a 2 moto format. The winner is determined with the best overall score. Motocross races are usually held on Sunday afternoons....
A Big Wheel