It's unofficial build but working bug less, fast & smooth.
- Moto E4 Unlocked bootloader ( if already locked bootloader check out this post )
- TWRP recovery Moto E4 Qualcomm variant ( if already haven't check out this post )
Download latest build from 10.17.2017 - here
- Boot into TWRP recovery by holding VOL Down + Power button on power off state
- Go to recovery with volume rocker then enter with Power button
- In TWRP go to Wipe -> advanced wipe -> then check Dalvik, System, Cache, Data and swipe to wipe
- Go back to install and find LineageOS zip archive then swipe to install
- Wait to process finish Moto E4 will be restarted automatically.
- First boot can take more time than usual just wait be patient!
- Enjoy of fastest & smoothest ROM on Moto E4.
Video tutorial & quick look