The Best Parts of a Street Bike

Street bikes, also known as naked bikes, are a very basic type of motorcycle. They resemble dirt bikes but feature parts designed for street driving rather than off-road use. Street bikes also feature smaller engines and fewer accessories than sport bikes or long-distance cruisers, making them among the least-expensive motorcycle options.
Frame
The center of a street bike is its frame. Motorcycle frames are made from welded metal, and street bikes use lightweight construction to achieve a strong frame at a low cost. A street bike's frame includes connecting points for many of its other parts, including the seat, front forks, handlebars and engine mount.
Engine
Street bikes usually employ a dual-cylinder internal combustion gasoline engine. A four-stroke engine is the most common configuration, operating much like a typical car engine with intake, compression, ignition and exhaust cycles. The engine uses one spark plug for each cylinder and two or more valves per cylinder for intake and exhaust. Street bikes may feature either an air-cooled engine, with fins on its cylinders to create more surface area and keep the engine cool while driving, or liquid-cooled engines, with a front radiator and pump system like that found in a car.
Fuel Tank
The fuel tank on a street bike is positioned directly above the engine, in front of the rider. Street bikes feature small fuel tanks that may only hold a few gallons. However, this may give the rider an even greater effective range than the rider of a larger, heavier bike with a larger fuel tank but poorer fuel economy.
Wheels
Street bikes use wheels in the 15-inch to 18-inch range. Wheels may be forged, cast or spoked, and carry rubber tires with rubber inner tubes and a mild tread pattern for on-road driving. So-called hybrid street bikes may come with a more aggressive tread pattern for off-road performance. Each wheel includes a disc brake with a single caliper for slowing the bike.
Seat
A street bike's saddle is usually designed for a single rider, though dual-rider saddles are also available. The seat-and-handlebar configuration place the rider in an upright position with foot pegs directly below the seat. Street-bike seats may include a storage space for tools and often conceal the battery, which powers the onboard electrical system.
Driveline
A street bike uses a chain for its final drive, and a manual transmission with a pedal shifter and handlebar clutch lever. The transmission may include anywhere between three and six gears. The chain drive attaches the transmission, located near the center of the frame, to the rear wheel, which is the drive wheel.
Controls
A street-bike rider has access to a number of controls. These include a foot brake, a hand brake, the pedal shifter and hand clutch. Street bikes also include switches for engaging the headlight and turn signals. Some models may come equipped with a radio, but such amenities are not common on street bikes.

Supercross returns to Anaheim on Saturday

Four races. Four winners. All former champions.
Parity prevails among supercross racing's top riders as the series makes its second and final season stop at Angel Stadium on Saturday night.
After reigning champion Ryan Villopoto won the season opener Jan. 7 at Angel Stadium, 2010 champion Ryan Dungey won in Phoenix, two-time champ Chad Reed captured the Dodger Stadium race and another two-time title winner, James Stewart, won last weekend in Oakland.
The sport knew it had one of the deepest fields in history this year, but the early results still have surprised. The last time there were four different winners through four races was in 1976, before any of the current top riders was born.
As a result, all four are in contention again for this year's championship in the 17-race Monster Energy AMA Supercross series, the stadium version of motocross, or off road motorcycle racing.
Dungey and Reed are tied for the lead with 85 points each, while Villopoto is only two points behind and Stewart — who posted mostly mediocre finishes in the first three races — is now 12 points behind.
"We'll just keep building from here," Stewart said. "It was a rough three weeks for us but it was definitely good to come back at Oakland and get a victory."
Stewart's win in Oakland was his first since the 26-year-old Floridian moved this year to the Yamaha motorcycle team at Joe Gibbs Racing of NASCAR fame.
Stewart also will have extra incentive Saturday night. He's currently tied for the most career wins in Anaheim, eight, with seven-time supercross champion Jeremy McGrath and another victory would give Stewart the record outright.
McGrath also holds the career record for total supercross wins, 72, followed by Ricky Carmichael's 48 and Stewart's 43.
Villopoto, meanwhile, hopes for a repeat of his Anaheim win last month, when the 23-year-old Kawasaki rider from the Seattle area cruised to a 12-second victory over the second-place Reed.

How to Buy Street Bikes

Buying a street bike is a difficult decision. There are countless models, sizes and options available to riders. Unless you are already an expert, it can feel overwhelming. However, there are ways to get closer to expert status.
1 Determine what kind of rider you are. Think about how you are using your street bike or plan to use it. This helps you narrow down your two wheeler search. If you commute to work, if you bike for pleasure or even if you bike for work as a bike messenger, these issues all contribute to the type of bike you need.
2 Set financial limitations on your street bike shopping. Street bikes come in so many styles and options that this is often one of the best ways to help decide.
3 Find a bike that fits your height as a rider. As a general rule, the crossbar should be a few inches below your rear end, if you are standing over the bike. However, some more advanced frames have different specifications, depending on your riding skill level and specific body type.
4 Decide how many gears you are interested in having. If you ride for pleasure and live in a flat area, a one-speed bike is a great option. If you ride daily and have some hills, a three-speed is a terrific choice. If you have long commutes and differing terrain, a 10-speed bike will give you the most adaptability.
5 Test ride your bike before purchasing. This is the best way to know whether this bike is for you. If you don't feel comfortable on the ride, test another.
6 Consider brands like Gary Fisher, GT, Giant, Scott and Dawes. Each brand has unique features and colors that may be appealing to you.
For more information about their products, visit their website:

Company name：Chongqing Yujue Electrical-Mechanical Co., Ltd
Contact us：Phone: 86-23-66224319
Fax:86-23-66236997
Web site：http://www.yujuemotor.com/
The main products： Cheap Off-Road Motorcycle Latest Street Bike