What we know today as "motocross" began in northern Britain, in the early 1920s, and was an off-road event known as "Scrambles". The first "Scramble" was ridden in 1924 in Camberley, Surrey. The dirt bikes of that period weren't very different from the road bikes, however, the intense off-road competition quickly led to technical improvements, such as the addition of suspension to the bike in the 1930s.
With the popularity of motocross on the rise world wide, it was only natural for a country versus country competition to arise. The competition would be an annual event called Motocross des Nations, with each country's team being comprised of three racers. The first race was held in 1947, and won by Great Britain. Great Britain only lost six times between 1947 and 1968, making them the obvious initial threat. Belgium became the dominating force through the 1970s, but once the United States entered the picture in 1981, no one else would take the prize again until 1994.
Now that motocross fever had spread most of the globe, and Motocross des Nations had become a yearly team tradition, a solo championship was needed. The first World Championship in motocross came in 1957, and was raced with each rider using a 500cc dirt bike. The 250cc class was added to the championship competition in 1962, making way for the two-stroke motocross bikes. It was then that the weight and easier riding ability of the two-strokes allowed companies such as Bultaco, CZ, Maico, and Husqvarna to take over the market. The 125cc World Championship class was introduced later in 1975.
In the early 1980s, Japanese bike companies began making major changes to the typical motocross bike. The bikes became water-cooled and with monoshock rear suspension, which started with Yamaha in 1975. The 1990s brought even more change when Californian environmental laws forced manufacturers to develop more environmentally friendly four-stroke bikes, yet many still prefer 2 stroke models for off road, woods style riding.
VintageMX.net is all about helping to preserve motocross history and information and to help make sure that these classic bikes and the origin of motocross never gets lost. Be sure to comment on racers, models of bikes, post a motocross event, show off your bike, or buy, sell, and trade!
1979 Yamaha YZ250 Primary drive gear 79 YZ 250 2K7-16111-00-00
$1,995.00
79 1979 Yamaha YZ250 YZ 250 engine motor cases cylinder trans crank stator kick
$1,000.00
NOS Spare Parts Yamaha: 1x 2x4-11400-00 YZ250F 1979 Crankshaft Crank Shaft NEW
$923.52
Yamaha TT500 YZ250 YZ400 YZ465 1979-81 piston kit 3rd 2K8-11630-30 Nos
$685.13
orig. Yamaha NOS Spare Parts YZ250F 1979: 1x Crankshaft Crankshaft 2x4-11400-00
$689.42
Yamaha YZ250 1979 cylinder jug barrel with piston 70.5mm NICE IT250
$383.99
1979 yamaha yz 250 swing arm
$450.00
1979 Yamaha Yz250 Yz 250 Engine Cases Crank Transmission Nice!!!! Oem
$439.00
79 1979 Yamaha Yz250f YZ 250 F 2-Stroke OEM Rear Swingarm Suspension Guide Guard
$399.99
1979 Yamaha YZ250 NOS Cylinder Head YZ250F NEW 2X4-11111-00
$249.99
GENUINE YAMAHA PARTS LEFT CRANK SHAFT HALF YZ250E 1978 YZ250F 1979 2K7-11412-00
$357.96
GEARBOX YAMAHA YZ 250 2X4 1979 - 2K7 1978
$299.62
Gear Yamaha YZ 250 2X4 1979 - 2K7 1978
$296.45
Yamaha TT500 YZ250 YZ400 YZ465 1979-81 piston 1st o s 2K8-11630-10 Nos
$282.75
Yamaha YZ250 1979 crankshaft crank shaft
$255.99
Yamaha YZ 250 1979 1978 2X4 engine motor CASE, CRANK (R.H) (L.H.) 2k7 withdamage
$165.00
1979 Yamaha YZ250 Frame YZ 250 2X4
$180.00
YAMAHA YZ250 C/D/E/F 1976-1979 F & R ALUMINIUM RED WHEEL RIM SET *nan4983
$203.00
YAMAHA YZ250 C/D/E/F 1976-1979 F & R ALUMINIUM RED WHEEL RIM SET **BI4269**
$192.85
Yamaha YZ250 YZ IT TY DT 250 1976 - 1979 69.94mm (A) Wossner Racing Piston KiT
$199.05
NEW WOSSNER PISTON KIT 1974 - 1979 YAMAHA YZ250 IT250 TY250 MC250 DT250 69.64 mm
$281.95
Fit YAMAHA YZ250 C/D/E/F 1976-1979 ALUMINIUM SILVER F & R WHEEL RIM SET [ES868]
$183.00
FIT YAMAHA YZ250 C/D/E/F 1976-1979 ALU BLUE F+ R WHEEL RIM SET *nan3823*
$192.79
Cylinder without piston engine Yamaha YZ250 1979 engine 2X4
$231.64
Cylinder Without Piston Motor YAMAHA YZ250 1979 Engine 2X4
$231.76