William Dunlop (born 23 July 1985) is a Northern Irish motorcycle racer, brother of Isle of Man TT winner Michael, the son of the late Robert, and the nephew of legendary TT racer Joey Dunlop.
 William started racing 125 cc bikes at the age of 17 and has now over 100 race wins on the Irish Roads.
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Roland Sands (born August 12, 1974) is an American motorcycle racer and designer of custom high-performance motorcycles.
 In his career as a professional motorcycle racer has won the 1998 AMA 250GP National Champion road racer championship.
 Sands is an award-winning designer of custom performance motorcycles, and owner and founder of Roland Sands Design.
Alexander Phillis (born 27 January 1994) is an Australian motorcycle racer.
 In 2011 he participated for the first time in a 125cc World Championship event, as a wild-card rider in the Australian round at Phillip Island but failed to qualify for the race.
 Phillis has also competed Supersport World Championship and Superbike World Championship.
 He is son of the former motorcycle racer Rob Phillis.
Alberto "Johnny" Cecotto (born January 25, 1956) is a Venezuelan former Grand Prix motorcycle racer and auto racer.
 He rose to prominence as a teenage prodigy in 1975 when he became the youngest motorcycle road racing world champion at the age of 19.
 Despite the auspicious beginning to his motorcycle racing career, he suffered numerous injuries and mechanical problems which curtailed his success in motorcycle Grand Prix racing.
 At the age of 24, Cecotto turned his attention to auto racing where he reached the pinnacle of the sport as a Formula One driver.
 He later became a successful Touring Car racer.
 He is the last of a select group of competitors who competed at the highest level in motorcycle and auto racing which, includes John Surtees and Mike Hailwood among others.
Georg "Schorsch" Meier (9 November 1910, Mühldorf am Inn – 19 February 1999) was a German motorcycle racer famous for being the first foreign winner of the prestigious Senior TT, the Blue Riband race of the Isle of Man TT Races, in 1939 riding for the factory BMW team and the first motorcycle racer to lap a Grand Prix course at over 100 mph.
Gábor Talmácsi (born (1981--) 28, 1981 in Budapest, Hungary) is a former Hungarian professional motorcycle racer.
 He was the 2007 Grand Prix motorcycle racing 125cc World Champion, and he is thus the first Hungarian to win a road racing World Championship.
 He has a younger brother, Gergő, who is also a motorcycle racer.
 Due to a leg injury suffered in 2013, Talmácsi has retired from racing professionally.
 After retiring from racing he set up his own team, Talmácsi Racing which competes in the European Superstock 600 Championship and races with the Honda CBR600RR.
Brandon Nozaki Miller, commonly known as both "Electric Cowboy" and "Sparky", is the world's first motorcycle racer to get licensed to race on an electric motorcycle, and went on to become the world's first professional racer to have never ridden a motorcycle powered by anything other than electricity.
 He was licensed at CVR (Chuckwallah Valley Raceway) with CVMA (Chuckwallah Valley Motorcycle Association) and TrackDaz.
 CVMA is the first motorcycle organization to license any racer on an electric motorcycle.
 As part of his progress and to challenge the stigma surrounding electrics when he first came into the sport, he made a point to show that production electrics were ready for everyone be they racers or not by competing in events like Pikes Peak, TTXGP, Mike Cooks Bonneville Landspeed shootout, MWGP, and even competed in M1GP which held the first US electric only club racing series.
Dakota Mamola (born 21 October 1994 in Barcelona) is a Belgian motorcycle racer.
 He races in the MotoAmerica Superstock 600 Championship aboard a Yamaha YZF-R6.
 Son of an American father—the former motorcycle racer Randy Mamola—and a Belgian mother, he has competed either with a Spanish and a Belgian racing license.
 In 2014 he made his debut in the Moto2 World Championship under the Belgian flag, as he replaced Nicolás Terol for the British Grand Prix.
Carl George Fogarty, {'1': ", '2': ", '3': ", '4': "} (born 1 July 1965), often known as Foggy, and the son of former motorcycle racer George Fogarty, is the most successful World Superbike racer of all time in terms of the number of championships and number of race wins.
Stephen Robert Dunlop (25 November 1960 – 15 May 2008) was a Northern Irish motorcycle racer, the younger brother of fellow road racer, the late Joey Dunlop, and like Joey he died after a crash while racing.

Question: This motorcycle racer with over 100 race wins was the son of a motorcycle racer who died after what?
Answer: a crash while racing