XL-1

The XL-1 is a size 2 military-class quantum drive manufactured by Wei-Tek.

Product description
"Wei-Tek might be a new company, but their line of military-grade components is already gaining notoreity. The XL-1 is their premier medium quantum drive that expertly blends performance and durability."

Buyable at
Last updated with info from patch 3.9.1.