Dirt Bikes
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50 free Dirt Bikes trivia questions with answers — sports quiz, new questions added Oct 2026.
A dirt bike is a simple machine doing a hard job: a light frame, long suspension and one hard-working engine, built to be dropped, picked up and ridden again. Knowing what each part does is half the fun of owning one, and a good share of this quiz asks you to name the pieces from what they do. The rest follows the bikes into competition. There are questions on how motocross got its name and where it started, the stadium racing that grew out of it, the Yamaha models and rival factories that shaped the sport, and the riders and stunt pioneers who made it famous. A few come from films, games and the wider culture around riding. It is written for riders, race fans and anyone who grew up wanting a bike of their own. Most questions are fair game for a casual fan; a handful are for people who do their own wrenching.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Which three crossed tools form the logo of Yamaha, a dirt bike maker that began with musical instruments?
Tuning forks
Tuning forks have marked the brand since its piano and organ days; the motorcycle business only split off as its own company in 1955.
Q 02Which pop star married freestyle motocross rider Carey Hart after meeting him at the 2001 X Games?
Pink
Pink met him in Philadelphia, a year after he made the first backflip attempt on a full-size motocross bike in competition.
Q 03The Dakar Rally, a desert marathon for dirt bikes, is named after the capital of which African country?
Senegal
Senegal was the finish line when the race began in 1978 as a run from Paris, and only 74 of the 182 vehicles that started made it there.
Q 04Which country music star's Tennessee ranch has hosted the AMA's national amateur motocross championship since 1982?
Loretta Lynn
Loretta Lynn and her husband welcomed the race to their Hurricane Mills ranch, which also stages concerts on holiday weekends.
Q 05Which dirt bike brand began in 1689 as a Swedish musket maker and still uses a gun sight as a logo?
Husqvarna
Husqvarna takes its name from the town of Huskvarna, where the weapons factory was founded more than two centuries before its first motorcycle.
Q 06Which 1984 Nintendo game, directed by Shigeru Miyamoto, puts the player in control of a motocross racer?
Excitebike
Excitebike ran on a smooth side-scrolling engine that Miyamoto's team reused a year later to build Super Mario Bros.
Q 07Disney's 2001 film Motocrossed, about a girl who races as her twin brother, adapts which Shakespeare play?
Twelfth Night
Twelfth Night supplies the twin swap: Andrea Carson secretly races in place of her injured brother Andrew, with her mother's help.
Q 08The name motocross blends motocyclette, the French word for motorcycle, with which other kind of racing?
Cross-country
Cross-country racing on motorcycles was first known as scrambling, and the French-flavoured name took over as the sport spread abroad.
Q 09Which freestyle motocross star landed the first double backflip in competition at the 2006 X Games in Los Angeles?
Travis Pastrana
Travis Pastrana scored 98.60 for the jump, the top score in the X Games Best Trick competition.
Q 10Which NASCAR speedway has hosted an AMA Supercross round without a break since 1971?
Daytona
Daytona builds its dirt course between pit road and the tri-oval each year during Bike Week.
Q 11On a dirt bike, which control does the rider work by twisting the right handlebar grip?
Throttle
Throttle twist grips go back to the Roper steam velocipede of the 1860s, and they are spring-loaded to snap back to idle when released.
Q 12Which rear suspension part holds a dirt bike's back axle and lets the wheel move up and down?
Swingarm
Swingarm designs took many forms before today's layout won out; the early maker Indian even hung one from a leaf spring.
Q 13Which part, also called a yoke, joins a dirt bike's front suspension tubes to the steering stem?
Triple clamp
Triple clamp sets come in pairs, an upper and a lower joined by the steering stem, and the handlebars usually mount on the top one.
Q 21Which thin-petalled part controls the fuel-air mixture entering many high-performance two-stroke engines?
Reed valve
Reed valve petals in racing engines are often made of composite materials, because their stiffness is easy to tune and they are fairly safe when they fail.
Q 22Which quick-release piece lets a rider join or split a drive chain without a chain tool?
Master link
Master link clips stand in for one pair of the chain's outer side pieces, though shortening a new chain to length still takes the tool.
Q 23Which nickname do motorcyclists give a single-cylinder engine, a layout known for pulsing power and heavy vibration?
Thumper
Thumper engines are simple and compact, which is why a lone cylinder also powers go-karts, chainsaws and lawn mowers.
Q 14Which toothed wheel, bolted to a dirt bike's rear hub, is turned by the drive chain?
Sprocket
Sprocket teeth mesh with the chain, the same way a bicycle carries power from its pedals to the back wheel.
Q 15Which fuel-mixing device, still used on many motorcycles, has largely been replaced by fuel injection in cars?
Carburetor
Carburetor engines hung on in small machines such as lawnmowers and generators long after cars and trucks switched in the 1990s.
Q 16Liquid-cooled dirt bikes shed engine heat through which part, similar to the one on a car?
Radiator
Radiator cooling matters most for the cylinder head, the hottest part of an engine; other motorcycles rely on air or oil cooling instead.
Q 17Which nickname do riders give off-road tires with deep, blocky treads built to grip loose dirt and mud?
Knobbies
Knobbies dig their tread edges into soft ground like cleats on a shoe, but they feel less stable on pavement.
Q 18Which guard bolts under an off-road motorcycle to protect its frame and motor from rocks?
Skid plate
Skid plate armor is also fitted to lowered cars, whose underbodies can scrape on ordinary roads.
Q 19Which exhaust device must be fitted to dirt bikes ridden on Forest Service land, to prevent wildfires?
Spark arrester
Spark arrester rules grew out of the 1950s, when foresters set out to cut the number of fires started by logging equipment.
Q 20Which bulging tuned exhaust pipe lets a two-stroke dirt bike make far more power than a plain silencer would?
Expansion chamber
Expansion chamber pipes end in a narrow tube called the stinger, which deliberately restricts the outlet to raise the pressure inside.
Q 24Yamaha reshaped motocross in the early 1970s by racing which rear suspension design, now the norm on dirt bikes?
Monoshock
Monoshock bikes outperformed the older layout so clearly that vintage competition now keeps the two kinds in separate classes.
Q 25Which two letters begin the names of Yamaha's motocross race bikes, such as its 250 two-stroke?
YZ
YZ has been on Yamaha's motocross bikes since the first 250 launched in 1974 with an air-cooled engine; liquid cooling arrived in 1982.
Q 26The 'cc' in a 250cc dirt bike is short for which measure of engine size?
Cubic centimeters
Cubic centimeters are the same size as millilitres, so a 250cc engine displaces a quarter of a litre.
Q 27Which Yamaha factory rider earned the nickname 'Hurricane' for a wild style, often with his feet off the pegs?
Bob Hannah
Bob Hannah backed up the name with 70 AMA race wins and seven championships between 1975 and 1989.
Q 28Yamaha's first motorcycle, the 1955 YA-1, was nicknamed after which slender insect by Japanese fans?
Dragonfly
Dragonfly suited the bike's slim shape and chestnut paint, and it won its class at the Mount Fuji Ascent Race in its first summer.
Q 29In motocross, which term describes being the first rider through the first turn after the start?
Holeshot
Holeshot riders get to set the tempo, because passing on a tight track can break a challenger's rhythm.
Q 30Which supercross obstacle is a long row of bumps that riders try to skim across the tops of?
Whoops
Whoops share a supercross track with rhythm sections, where each rider picks a different combination of jumps.