Three-Time 500cc World Champion · MotoGP

Kenny Roberts

The first American to win a Grand Prix world championship, the rider who brought dirt-track technique to European road racing, and the team owner who put Wayne Rainey on the top step. The official Kenny Roberts collection: Yamaha, the No. 1, and 1979.

Nationality
American
Born
31 December 1951 · Modesto, California
Teams
Yamaha · Marlboro Agostini Yamaha
World titles
3 (500cc 1978, 1979, 1980)
Also
AMA Grand National champion 1973 and 1974 · Daytona 200 winner three times
After racing
Founder and owner of Team Roberts
Graphic illustration of motorcycle racer Kenny Roberts wearing his white, yellow, and blue Yamaha racing suit and cap, featuring his red and black number 10 race motorcycle
Three-Time 500cc World Champion
1974 — 1983
3
World Championships
24
Grand Prix Wins
44
Podium Finishes
61
Grand Prix Starts

Who is Kenny Roberts?

Kenny Roberts (born 31 December 1951) is an American former Grand Prix motorcycle racer who in 1978 became the first American to win a Grand Prix world championship. He won the 500cc title in 1978, 1979 and 1980 for Yamaha, and was twice AMA Grand National Champion before that. He later founded Team Roberts, for whom Wayne Rainey won three consecutive 500cc championships.

Full name
Kenneth Leroy Roberts
Nationality
American
Grand Prix career
1974, 1978–1983
Best known for
The first American world champion, and rear-wheel steering
Rider Profile

Kenny Roberts: Full Biography

Kenny Roberts is an American former Grand Prix motorcycle racer and team owner. In 1978 he became the first American to win a Grand Prix world championship, and he won the 500cc title three years running.

Modesto He came from American dirt track, where he took the AMA Grand National Championship in 1973 and 1974 and became only the second rider after Dick Mann to win all five types of event that made up the series. He raced in Europe once in 1974, at Assen, and took pole position and the fastest lap on his debut. He went back to America and stayed there until Yamaha, unable to build a dirt-tracker that could beat Harley-Davidson, sent him to Europe full time in 1978.

King He won the 500cc championship at the first attempt, from Barry Sheene, and then won it again in 1979 and 1980. His method was borrowed from the dirt: brake early, get on the throttle, and steer the bike on a spinning rear tyre. It looked violent and it was faster, and it is how Grand Prix motorcycles have been ridden ever since. Hanging off with a knee out, he taped foam to his leathers, which is where knee sliders come from.

Team Roberts He fought the governing body over starting money and circuit safety, refusing a winner’s trophy in Spain in 1979 and planning a breakaway series in 1980 before the FIM gave ground. He retired in 1983 after losing the title to Freddie Spencer by two points, and built a team instead: Wayne Rainey won three consecutive 500cc championships for him.

The Career

Three Chapters That Defined Kenny Roberts

Chapter 01

Modesto

He learned to race on dirt ovals in California, and by 1973 he was AMA Grand National Champion, a title decided across five different kinds of racing. He won it again in 1974, and became the second rider after Dick Mann to win all five event types. His one European outing that year was the 250cc Dutch TT at Assen, where he took pole position, set the fastest lap and finished third. He went home. Only when Yamaha accepted that they could not build a dirt-track bike to beat Harley-Davidson did he agree to go to Europe properly, in 1978.

Kenny Roberts leaned into a corner on a 250cc Yamaha carrying the number 11 at Assen. European debut · 250cc Dutch TT, 1974 Photo: Kenny Roberts leaned into a corner on a 250cc Yamaha by Hans Peters for Anefo — CC0. Cropped and resized. · licence
Chapter 02

King

Barry Sheene had won the previous two championships and said the American was no threat, which is the reason Roberts later gave for bothering to turn up. He won the title in his first season, then the next, then the one after that. The riding came from the dirt: brake early, open the throttle, and let the rear tyre spin the bike round the corner. Europe had never seen anything like it, and from 1983 to 1999 every 500cc champion had a dirt-track background. Hanging off with a knee down, he taped padding to his leathers, and knee sliders followed.

Kenny Roberts (carrying No. 1) corners in line with two other 500cc riders (No. 7 and No. 4) in front of a packed grandstand at Assen. With Barry Sheene and Johnny Cecotto · Dutch TT, 1978 Photo: Kenny Roberts (carrying No. 1) corners in line with two other 500cc riders (No. 7 and No. 4) by Rob Bogaerts / Anefo — CC0. Cropped and resized. · licence
Chapter 03

Team Roberts

He was as difficult with the authorities as he was quick. When Spanish organisers withheld the starting money the rules guaranteed, he won the race and refused the trophy on the podium, telling them to sell it and pay the riders. The FIM suspended him, then reduced it to probation. In 1980 he went further and planned a rival series, and the governing body finally moved on safety and prize money. He retired in 1983 having lost the championship to Freddie Spencer by two points, and started a team the year after. Wayne Rainey won three straight 500cc titles for him, and in 1990 the team took the 500cc and 250cc championships in the same year.

Kenny Roberts in helmet and leathers marked Kenny, leaning over his Yamaha in the paddock surrounded by photographers and crew in Goodyear caps. In the Assen paddock · Dutch TT, 1980 Photo: Kenny Roberts in helmet and leathers marked Kenny by Fernando Pereira / Anefo — CC0. Cropped and resized. · licence
Career Timeline

Kenny Roberts Career Timeline: 1951–Present

Born in Modesto

Kenneth Leroy Roberts is born on 31 December in Modesto, California.

Grand National Champion

Wins the AMA Grand National Championship across all five disciplines.

Assen

Pole and fastest lap on his European debut, and a second Grand National title.

World Champion

Wins the 500cc championship at the first attempt, from Barry Sheene.

Champion Again

A second title, and the refused trophy at the Spanish Grand Prix.

Third Title

A third consecutive championship, and a plan for a breakaway series.

Spencer

Six wins in his final season, and second by two points to Freddie Spencer.

Team Roberts

Starts his own team in the 250cc class with Wayne Rainey.

Double

Rainey wins the 500cc title and John Kocinski the 250cc, for the same team.

Hall of Fame

Inducted into the Motorsports Hall of Fame of America.

Team KR

Leaves Yamaha after 25 years to build his own three-cylinder Grand Prix bike.

AMA Hall of Fame

Inducted into the AMA Motorcycle Hall of Fame.

Grand Prix Legend

Named a Grand Prix Legend by the FIM, the year his son wins the 500cc title.

By the Numbers

Kenny Roberts Grand Prix Record, Season by Season

Kenny Roberts season-by-season record: team, wins, poles, podiums, points and final standing.
SeasonTeam Wins Poles Podiums Points Pos.
1974 Yamaha USA · 250cc 0 1 1 10 19
1978 Yamaha USA · 250cc 2 3 4 54 4
1978 Yamaha USA · 500cc 4 2 8 110 1
1979 Yamaha USA · 500cc 5 5 7 113 1
1980 Yamaha Intl · 500cc 3 2 6 87 1
1981 Yamaha Intl · 500cc 2 0 5 74 3
1982 Yamaha Intl · 500cc 2 2 4 68 4
1983 Marlboro Agostini Yamaha · 500cc 6 6 9 142 2

Championship seasons are highlighted. He contested both the 250cc and 500cc classes in 1978, which is why that year appears twice; the 500cc row is the title. Career totals: 24 Grand Prix wins · 44 podiums · 21 pole positions · 27 fastest laps · 658 points from 61 starts, which is what this table sums to. Twenty-two of the 24 wins came in the 500cc class and two in 250cc, which is why some sources give his win total as 22. MotoGP's rider profile and the article infobox give 60 starts and 22 poles against the 61 and 21 the season rows produce; the difference is one race and one pole in each case and the per-season figures are used here. Points are not comparable with later eras, as only the top six scored for most of his career. Figures verified 17 August 2026.

Kenny Roberts in his own words

In His Own Words
There was nothing else for me to do except go to Europe.
Kenny Roberts · on leaving American dirt track for Grand Prix racing
Frequently Asked

Kenny Roberts: Frequently Asked Questions

How many world championships did Kenny Roberts win?

Three, all in the 500cc class, in 1978, 1979 and 1980, riding a Yamaha. He also won the AMA Grand National Championship in 1973 and 1974.

Why is Kenny Roberts significant?

Because he was the first American to win a Grand Prix motorcycle world championship, in 1978, and because of how he rode. He brought dirt-track technique to road racing, steering the bike with a spinning rear tyre, and every 500cc champion from 1983 to 1999 came from a dirt-track background.

Did Kenny Roberts invent the knee slider?

The modern knee puck follows from his cornering style. Hanging off the bike with his knee extended, he taped padding to his leathers to protect it, and purpose-built knee sliders were developed from that.

What happened at the 1979 Spanish Grand Prix?

Organisers refused to pay the starting money the rules guaranteed. Roberts won the race and then refused the winner's trophy on the podium, telling the promoters to sell it and use the money to pay the riders. The FIM suspended him and then reduced the penalty to probation.

Why did Kenny Roberts go to Europe?

Because Yamaha could not build him a dirt-track motorcycle capable of beating the Harley-Davidson team, so there was no way to keep fighting for the AMA Grand National Championship. Yamaha sent him to contest the world championship instead.

How did Kenny Roberts' last season go?

He won six of the twelve races in 1983 and still lost the championship to Freddie Spencer by two points. He retired at the end of that year.

What is Team Roberts?

The Grand Prix team he founded in 1984, first in the 250cc class with Wayne Rainey. Rainey won three consecutive 500cc world championships for the team from 1990 to 1992, and in 1990 the team won the 500cc and 250cc titles in the same season.

How many Grand Prix races did Kenny Roberts win?

Twenty-four, from 61 starts: 22 in the 500cc class and two in 250cc. He also took 44 podiums and 27 fastest laps.

Shop His Gear

Kenny Roberts Collection

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References

Sources & Further Reading

Every statistic on this page is drawn from the following records.

  1. Kenny Roberts — official rider profile · MotoGP (official)
  2. Kenny Roberts: News, Photos, Stats and more · Crash.net, second source for the title seasons
  3. Racing's Greats: Kenny Roberts · Classic Two Wheels, source of the pull quote
  4. Kenny Roberts · Wikipedia, season-by-season results
  5. 1979 Spanish motorcycle Grand Prix · Wikipedia, the refused trophy
  6. Kenny Roberts (Q550266) · Wikidata entity record

How this page is made

Rider profiles are compiled from official series records and cross-checked against independent statistical databases before publication.

Commercial disclosure. This page links to merchandise sold by KozmozInspire. Products are fan-made tributes inspired by motorsport history and are not affiliated with, endorsed by, or licensed from the rider, their estate, or any team.

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