| Coolant System|
Upgrade Category: Engine Upgrades
With a fast plane, this is better than a Port and Polish. On a slow plane, it's garbage.
| Price: 50000Ģ|
Availability: Fuseli, Earthbreach, Arcadia
Despite the description, a combination of R Sticker and Port and Polish offers more speed and less range reduction for almost every plane; however this upgrade remains an effective way to lower stall speed on some of the high tier Performance planes.