Formats and tyre allocations have been confirmed for all four Sydney Motorsport Park events.
It was announced last week that the Eastern Creek venue will stage four back-to-back weekends of racing.
Earlier this week, it was confirmed the opening Sydney SuperNight event will play host to a trio of sprint races, each 125km in length.
Fourth Sydney event to feature Additional Driver session
Going the distance: 250km format returns in Sydney
Following a Supercars Commission meeting on Thursday, the formats and tyres for the remaining three events were locked in.
The second and third events will also feature a trio of sprint races - but the final event will be headlined by two 250km races.
As seen in SuperSprint formats throughout the 2021 season, teams are required to complete one compulsory pit stop during each race, changing a minimum of two tyres.
The fourth Sydney event will be just the third event in 2021 to feature two refuelling races following the season-opening Repco Mt Panorama 500 and NTI Townsville 500.
Night racing will feature at the second and fourth events. Of the 11 races in total in Sydney across the four events, four will be held under lights.
Races 23 and 25 at the second event will be held under lights. The first 250km race at the fourth event, Race 29, will also be held under lights.
Mixed tyre compound racing will feature at the second and fourth events, with the third event a Dunlop Soft Tyre only event.
The second event will see teams handed five sets of event-marked Softs and three sets of Hards.
The fourth event - the dual 250km round - will feature seven sets of Hards and two Super Soft sets. The Super Soft tyres cannot be used in any other session other than the two races.
The single-compound tyre formula will remain in place for the third event, with five sets of the Dunlop Soft compound available to each car from the start of Saturday qualifying.
The second and third events will be two-day affairs, with the fourth event to feature an Additional Driver session on the Friday in preparation for the Repco Bathurst 1000.
All four events will be held on the Gardner Grand Prix Circuit configuration.
Friday, October 29Two 30min practice sessions (second at Night)
Saturday, October 30Knockout qualifyingARMOR ALL Top 10 ShootoutOne 125km race (Night)
Sunday, October 31Two single qualifying sessionsTwo 125km races
Sydney Motorsport Park 2
Saturday, November 6Two 30min practice sessionsOne knockout qualifying sessionOne 125km race (Night)
Sunday, November 7Two single qualifying sessionsTwo 125km races (second at Night)
Sydney Motorsport Park 3
Saturday, November 13Two 30min practice sessionsOne knockout qualifying sessionOne 125km race
Sunday, November 14Two single qualifying sessionsTwo 125km races
Friday, November 19One 40min Additional Drivers sessionOne 30min practice session (Night)
Saturday, November 20One 30min practice sessionOne single qualifying sessionARMOR ALL Top 10 ShootoutOne 250km race (Night)
Sunday, November 21One single qualifying sessionARMOR ALL Top 10 ShootoutOne 250km race
Support categories for the event are yet to be confirmed, with further details surrounding the Sydney event to be announced in due course.
Shane van Gisbergen leads the 2021 standings by 276 points over Red Bull Ampol Racing teammate Jamie Whincup.
Fans will be welcome at all events.
Ticketing details are being prepared, but fans can expect multi-event packages, family packages, park and view, grandstand and general admission options to cater for all tastes and expectations.
Details of the ticketing information will be communicated by Supercars soon.
Full broadcast details for all events, including details of daily coverage plans, will also be released soon.
Supercars will be working closely with health authorities around COVID-safe measures and Public Health Order requirements to ensure the safety of all staff and patrons attending the event.
All teams and officials will follow appropriate health guidelines for each event.