The trio of veteran acts will bring (some of) the noise to next year's stalwart street-machine event.
Australia's "biggest horsepower party", Summernats, has announced its music line-up for 2018, securing stalwart acts Wolfmother, 28 Days and Thundamentals to bring the non-exhaust-related noise to next year's event.
Held over four days at Canberra's Exhibition Park, Summernats is an annual celebration of things that go vroom, with Nats first-timers 28 Days set to kick off the entertainment on the event's second day, Friday 5 January.
"We're definitely looking forward to a big hit out at Summernats," the band said in a statement. "It's a crazy crowd and that's exactly what we like."
Their enthusiasm was echoed by their fellow hip hop mainstays in Thundamentals, who said they are "pumped about hitting the Summernats".
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"We hear the Nats gets pretty wild on Friday night, and it's gonna be a heap of fun with the guys from 28 Days there too."
Wolfmother will close out the entertainment the following night, Saturday 6 January, on the heels of an extensive overseas stint that has seen them tour their recent album Victorious around the world over most of the past year-and-a-half.
More than 100,000 people are expected to attend the 2018 Summernats event when it rolls into town from 4-7 January.
Tickets are on sale now from the Nats website.