Boost Mobile will back Brodie Kostecki's maiden full-time Supercars campaign with Erebus Motorsport.
Erebus announced Monday that the telecommunications brand has joined the team as a co-naming rights sponsor of the #99 entry.
In 2021, Kostecki will race under the Erebus Boost Mobile Racing banner.
The livery, on a customary black PPG base and wrapped in Metamark film, features striking orange and white lines.
Erebus also welcomes Rampage, New Balance and WD-40 as new partners.
Boost Mobile will also back James Courtney's Tickford Racing entry in 2021, in a relationship with the Ford team which began mid-season last year.
The Australian-owned company was founded in 2000 by Peter Adderton, with Boost Mobile focusing on action sports, lifestyle and music.
"To have Boost Mobile not only join our team, but become a major partner is fantastic for everybody involved," Erebus CEO Barry Ryan said.
"Boost Mobile are a fantastic company that not only provides a great service but has a real passion for what they do and connecting to the youth market.
"Having Boost Mobile onboard shows the strength and direction the team is heading, and we are more than confident Brodie can have the Boost Mobile Commodore near the front of the field."
Boost Mobile founder Peter Adderton added: "We have long been a support of Brodie and when the opportunity to partner with Erebus and Brodie came up, we jumped at it.
"Getting behind young talent has been a key to Boost’s success, and I have always said if Supercars fans support Boost Mobile we will invest back in the sport.
"We have seen tremendous support for our brand amongst a lot of fans which enables us to support young drivers like Brodie."
Kostecki impressed co-driving for Erebus in 2020, finishing ninth at Bathurst alongside Anton De Pasquale.
"I'm extremely proud to have represented Boost for a number of years, but it's even more special to see them wrapped all over my #99 Holden," the 23-year-old said.
"I can't wait to get back in the car at Bathurst, the car looks fast and I'm hoping we can start where we left off last time."
Kostecki will debut the new look at this weekend's Repco Mt Panorama 500.
Cars will hit the track on Friday for opening practice of the Repco Mt Panorama 500. Tickets are on sale now.
This weekend’s event will be broadcast live on Foxtel and the Seven Network, and will be streamed on Kayo. Check out the full TV schedule here.