LC Thrusters
A free and open source cold-gas thruster package for vehicles. Equipped cars get boost nozzles, lift thrusters for short hops and hovers, a flight computer that keeps them stable and lands them softly, stunt control in the air and an underbody fan that holds them on loops and walls.

Available free here: lc_thrusters.zip
Showcase: https://youtu.be/_WEYXLgDW5Q (opens in a new tab)
About the resource
Boost: The 4 rear nozzles push the car forward while the key is held. Fire them too long and they overheat and need to cool down.
Lift: The 4 underbody corner nozzles make the car climb at a steady speed while the key is held, for short hops, hovers and jumping over obstacles.
Stability Control: In every jump, the side thrusters keep the car level and pointing where it travels, and roll it back upright when it flips in the air.
Landing Assist: The car falls freely and the lift brakes at the last moment, for a soft touchdown that spends the least air possible.
Stunts: In the air, A/D roll and W/S pitch the car with the thrusters, so players can do kickflips, barrel rolls and flips.
Underbody Fan: Sucks the car to the road, so it can drive on banked, vertical and upside-down track, at any speed.
Compressed Air Tank: Shared by every thruster and refilled by an onboard compressor while driving. The last part of the tank is reserved for the assists, so a car is never left without a safe landing.
Car Screen UI: A driving readout with a live view of the car showing each nozzle firing, air tank, boost heat, lift reserve, altitude and vertical speed.
Control Panel: Each driver can turn the assists and the fan on or off, hide the readout and move it to any screen corner. Their choices are remembered.
Synced Effects: Thruster plumes, ground smoke and a generated thruster sound, seen and heard by every player nearby.
Optional Database: Install the package on single vehicles by plate with admin commands, and save the tank level of owned vehicles.
Exports for Developers: Check, install or remove the package and read or set the tank level from other scripts (refills, mechanics, shops...).
Rebindable Keys: Every key can be changed by the players in the FiveM key bindings.
Optimized & Performance-Friendly: Ensures smooth server performance without lag or FPS drops.
User-Friendly Configuration: Choose the vehicles, tank size, boost, climb speed, which assists are allowed, effects and UI preferences with ease.