There are various ATV parts and upgrades available for sale. Companies like Yamaha, Suzuki, Honda, Kawasaki and Polaris are the market leaders in ATVs; therefore, their parts are more available than lesser-known brands.

The various parts available are tires, batteries, gas tanks, brakes, cables, ramps, seats, exhausts, levers, seat covers, pistons, rings, gaskets, chain, mufflers, sprockets, bearings, seals, lift kits, heat fighter kits, fenders, bumpers, air filters, handlebars, and ATV exhausts. Another important part is an ATV repair manual. Some repair manuals are graphic in nature, and are more helpful.

Air filters also play an important role in increasing the pickup of an ATV. Installing a good air filter can increase the pickup of an ATV by almost one HP.

ATV guards and radiator grills are used to guard the ATV from damage due to rocks and debris. Two kinds of metals are used for these grills: stainless steel and alloy. Sometimes the stainless steel grills are highly polished, which gives them a mirror finish. They are also useful against ram-air and force-air effects.

The sub-frame guards are useful both to add to the grace of the ATV as well as guard it from damage. The sub-frame guard covers and guards the various parts of the ATV, like the exhaust system, electrical system and hot pipe.

Carburetors play a major part in increasing the pickup of an ATV. Therefore, a large high-performance carburetor is always preferred. Generally, carburetors are available in the market as part of a Carburetor kit. The kit comes complete with pre-jetted carburetor, choice of whirlpull type or thumb-throttle cable, manifold (if necessary), and all necessary hardware for an easy installation.

Crankshaft kits for ATVs are available on the market. The kits are sold complete with rods, top-end bearings and inner ATV crankshaft webs. The multi-ATV cylinder applications come with main bearings.

ATV connecting rod kits consist of an ATV rod, crank pin, crank pin bearing, top-end bearing and thrust washers.

The tires of the ATV are among the most important parts. Basically, all-terrain tires are made for proper performance for both on- and off-road purposes. This is accomplished by using a tread pattern design where the lugs are tighter together than a mud tire’s tread. They perform well on a variety of terrains, like rocks, sand and mud, while still offering decent traction on a paved road.

Depending on the tires, one can use the ATV for various purposes. Since the ATV is designed for off-road use, such as on sand, gravel, mud or snow, much depends on the type of tires one uses in an ATV.

When first launched in 1981, the ATVs had balloon tires. Today, a general ATV tire is heavy, with deep treads and a low pressure (less than 10 pounds per square inch [PSI]). This helps the tires get a better grip on the road, and therefore helps in navigating terrain like forests and wetlands.

A tire is made out of belts, a carcass and the inner lining. The belts are a series of rubber-coated layers of steel, polyester, nylon or Kevlar. The carcass is the main body of the tire, which is made out of wire beads and body plies. The inner liner is a special layer of compounded rubber, forming the inside of a tubeless tire.

There are two basic types of tire construction: bias-ply and radial designs. Bias-ply tires are made of textile cords, like nylon and sometimes Kevlar. Radial tires are made of rubber-coated reinforced-steel cable belts.

Each type of tire construction has its own unique set of characteristics, which play a part in its performance.

Sipes are the slots cut into the surface of the tire tread. The number of sipes and the way they are set in the tires is an important factor in the traction the tires get on muddy, snowy, wet or icy surfaces.

It is very important to be able to read the specs of a tire before buying it. The basic factors important while buying tires are tire type, tire width and aspect ratio of the height to the weight to the tire. Also, one should find out about the construction, wheel diameter, load index and speed rating of the tire.

The tires of an ATV are also the main culprit for the various criticisms against ATVs today. Along with taking a good grip on the path, the ATVs also dig channels that drain out boggy areas of water in forests, tear out fragile plants that are vital for the integrity of the sand dunes in deserts and beaches, and also destroy well-maintained snow trails in snow.

Suzuki, Yamaha, Honda, Kawasaki, Arctic Cat, and Deere and Company are some of the major players in the all-terrain-vehicle market today. Honda made the first three-wheeled ATV in 1930. Most of the companies have the Utility, Sport and Kids range of ATVs.

Suzuki has various models like the King Quad 700, Twin Peaks 700, Vinson, Eiger and Ozark range of ATVs as utility vehicles. Its Racing range has the QuadRacer and the QuadSport models. It also has the QuadSport 80 and QuadSport Z50 in its kid’s range.

The company has various SOHC and DOHC models. Single Over Head Cam models have an internal combustion engine design, with one camshaft located above the valves. A Dual Over Head Cam model has the camshafts which operate the intake and exhaust valves mounted above the camshafts. Also, there are separate camshafts for inlet and exhaust valves.

The ATVs have an option of four- or two- and front-differential-locked four-wheel drives. Suzuki ATVs have their own fuel-injection system, featuring technology tested through years of development. All Suzuki ATVs are built of high tensile steel and have hydraulic front-end brakes. They generally have a 695 cc engine.

Honda has the TRX series, the TRX 250EX, TRX 300 EX, TRX 400 EX and the TRX 90 for kids. It also has the TRX 450R in electric start and kick-start mode. The TRX models are sports models, while the utility models are the FourTrax series, the Rincon, Rincon GPScape, Foreman Rubicon, Rancher and Recon models.

The Honda utility models have a 700 cc engine and electronic fuel injection. They also have fully independent fuel injection.

Yamaha has the Grizzly, Kodiak, Big Bear and Bruin models of ATVs. It also has the Grizzly 80, the ATV aimed at kids. It has unveiled new models as a celebration of their fiftieth anniversary in the business of making transport. Yamaha ATVs have liquid-cooled, five-valve, 660cc four-stroke engines. It is also available in two-wheel-drive, four-wheel-drive and fully locked differential four-wheel-drives.

Kawasaki has its own range of ATVs for Sport, Utility, Sport-Utility and Kids. They have the KFX 50, 80, 400, 700 IG and 700. The utility models are Brute Force, Prairie and Bayou.

Kawasaki ATVs have a powerful V-twin engine and automatic transmission. They also have a racing-style chassis. The KFX 700 is now available in two new colors, meteor blue and galaxy silver.