The 2021 Husqvarna FC 450 Rockstar Edition is probably the closest thing to a factory ride most of us will get. 
Begin Press Release: 

HUSQVARNA MOTORCYCLES UNVEILS 2021 FC 450 ROCKSTAR EDITION
ALL-NEW AESTHETICS AND FACTORY RACE TEAM COMPONENTRY FURTHER ENHANCE THE CHAMPIONSHIP-WINNING MACHINE
Featuring a striking, brand-new look and class-leading performance, Husqvarna Motorcycles North America, Inc. is excited to reveal the 2021 FC 450 Rockstar Edition. Most recently acclaimed as the starting point for Zach Osborne?s 2020 AMA 450MX championship-winning Rockstar Energy Husqvarna Factory Racing machine and the proven basis for Jason Anderson?s 2018 450SX title, the competition-ready motorcycle features numerous upgrades and improvements over the standard FC 450.
Building off an incredible conclusion to the 2020 AMA Supercross Championship with a Rockstar Energy Husqvarna Factory Racing podium sweep via Osborne, Anderson and teammate Dean Wilson, the 2021 FC 450 Rockstar Edition is designed to further increase its winning potential inside the arena. Beneath the updated Rockstar Energy Husqvarna Factory Racing team graphics, the FC 450 Rockstar Edition uses Husqvarna Motorcycles? lightweight FC 450 chassis, together with the latest WP XACT suspension. Delivering precise handling, the optimized suspension improves rider confidence allowing all racers to master the toughest terrain with conviction.

With a focus on the latest technology and offering fully customizable ridi...