AEROSPACE & DEFENSE
Tier-1 Propulsion & Powertrain
World’s Most Productive Companies
Tier-1 Propulsion & Powertrain
Tier-1 Propulsion and Powertrain suppliers build and service jet engines and their core systems. Aftermarket intensity, installed-base service, and disciplined production make this one of the most productive corners of aerospace.
The group had a strong 2025, finishing about 24% above its 2019 baseline. Rolls-Royce and GE Aerospace led as World’s Most Productive Companies. Every company in the group improved on the year.

Tier-1 Propulsion & Powertrain World's Most Productive Companies
Productivity Snapshot
- Tier-1 Propulsion & Powertrain ranks first of four Aerospace and Defense peer groups in 2025, at an Industrial Productivity Index of 1.24, about 24% above its 2019 baseline.
- 4 of 4 companies grew productivity in 2025.
- They are the group’s World’s Most Productive Companies: Rolls-Royce (1.42), GE Aerospace (1.23).
- Strong aftermarket demand and engine deliveries lifted every company in the group, extending a multi-year climb well above the 2019 baseline.
Interested in learning more about how you stack up, where to improve, and the impact on margin, cash, inventory, and assets?