The GB cycling team has been dominant in the velodrome since Athens 2004, bringing back reams of medals from Beijing, London and Rio.
It's a trend this year's athletes will look to continue, with married couple Laura and Jason Kenny both racing to become Britian's most successful Olympians.
While GB make it look easy, track cycling is no mean feat; the edge of the track is almost vertical and with athletes hitting speeds of around 60mph, crashes can prove catastrophic.
Not only is it dangerous, but racing is hugely tactical, requiring a cool head and intimate understanding of events.
As we prepare to watch the GB team set blistering times, here is your guide to the keirin, what it is and GB's medal hopes...
What is the keirin?
The keirin is returning home this year, with the event originating in Japan in 1948 originally as a betting sport.
Part of the Olympics since Sydney 2000, the sprint event see's 6 cyclists joined on the track by a small moped called a derny.
The derny's job is to pace the riders for the first three laps of the six lap race, reaching 50km/h before pulling off the track.
While the derny is on the track, cyclists must stay behind it's back wheel and jostle for the best position in the lead up to the sprint.
The athletes then race the final three laps with the first person to cross the finish line the winner.
GB has a golden history in the event, with Jason Kenny returning as defending Olympic champion, following in the footsteps of Christ Hoy who won the event in 2008 and 2012.
Who are GB's medal hopes in the keirin?
Jason Kenny returns to the event as the reigning Olympic champion.
Competing in three events across the games, Jason has the opportunity to become Britain's most successful Olympian outright, currently drawing with Chris Hoy for the title.
Scotland's Jack Carlin will join Jason on the start line, having won bronze in the event in the 2018 European championships.
In the women's event, Katy Marchant will line up for GB with Olympic medal experience under her belt - she won bronze in the women's sprint in Tokyo.
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