Honda has endured a torrid few years, with the 2023 season so far proving just as difficult despite LCR's Alex Rins ending its victory drought dating back to 2021 in April's Americas GP.
Since late last season, Honda has been working with German chassis manufacturer Kalex on bike development, with that first manifesting itself in the form of a swingarm.
This collaboration has evolved further into a full chassis, which was debuted by HRC tester Stefan Bradl at the post-Spanish GP test at Jerez earlier this month.
Marquez was absent from this test as he was forced to miss the Spanish GP due to his ongoing recovery from a broken thumb sustained in the opening grand prix of the year in Portugal.
The Spaniard was declared fit to ride on Wednesday morning by Honda after doctors advised he miss the Spanish GP to avoid doing any damage to his thumb that could have potentially ended his career.
Source: Autosport