Inflexion has agreed to sell Avantus Aerospace to US private equity firm Arcline Investment, concluding a nearly decade-long investment that began in 2015. The California-headquartered company manufactures shims, fasteners, and detailed parts across eight facilities in the US and Europe, supplying mission-critical components to major aerospace OEMs and defense programs.

Avantus emerged from the 2015 secondary buyout of Shimtech, rebranding in 2020 under Inflexion's ownership. The holding period coincided with significant industry headwinds including the 737 MAX grounding and pandemic disruption, prompting a comprehensive business overhaul spanning financial restructuring, organizational changes, and operational improvements.

Under Inflexion's stewardship, the company executed a disciplined M&A strategy that expanded its customer base and product portfolio while building a compelling global market position. Managing Partner Flor Kassai credited the transformation to focusing on powerful end-market tailwinds and operational investment.

The transaction, pending regulatory approvals, represents Inflexion's successful pivot from a distressed aerospace supplier to a scaled platform serving both commercial and defense aircraft programs, demonstrating private equity's ability to navigate cyclical industries through strategic operational and acquisition-led growth.