Winner: Multi-material rear leaf spring (OEM make and model: 2021 Ford Motor Co. Ford F150)
This hybrid rear leaf spring, which also won the Grand Award selected among the winners of all of the categories, combines a high-strength steel main pack plus a high-pressure resin transfer molding (HP-RTM) fiberglass-reinforced epoxy composite helper. It reduces mass by 30% while providing the same stiffness and durability as a conventional steel leaf spring system. Additional benefits include increased payload capability, lower part count, decreased interleaf friction, smoother engagement, lower noise, and a lower carbon footprint.
- Tier supplier/processor: Rassini Suspensiones/Rassini Suspensiones, SGL Carbon
- Material suppliers: Hexion Inc., SGL Carbon
- Materials: Epikote TRAC 06150 resin; Epikure TRAC 06150 curing agent, Heloxy TRAC 06805 additive