I'm sure this has been posted before, but just to add to the collective knowledge base.
I was frustrated by the lack of a driver's side a-pillar grab handle on my new grenadier. I poked around and found that the oem setup was pretty pricy.
So I searched around and found some really nice aluminum replacements from Agile offroad.
agileoffroad.com
The passenger side was too easy, use a tiny screwdriver to pop open the two plastic covers, remove the original equipment grab handle with a T30 socket, and reinstall the Agile grab handle with the provided bolts using the same T30 socket.
Note that there is an airbag under the a-pillar plastic cover, so you want to remove the trim before drilling or cutting to avoid airbag damage.
On the drivers side, you need to cut some holes. Flip open the plastic cover over the mounting bolt, then remove the T30 bolt, and pry from the top, maneuvering the rear from under the door seal.
Once removed, tape the cardboard template provided from agile, mark and cut the holes using your preferred method.
For me, that involved using painters tape, marking with a sharpie, drilling the corners, and cutting the straight lines with a razor knife, cleaning up with files.
Then, reinstall the trim, put the factory T30 bolt in, pop the plastic cover on, install the new handle with the two provided T30 bolts.
Done!
This is a huge improvement.
I was frustrated by the lack of a driver's side a-pillar grab handle on my new grenadier. I poked around and found that the oem setup was pretty pricy.
So I searched around and found some really nice aluminum replacements from Agile offroad.

INEOS Grenadier A-Pillar Grab Handle Mount » Agile Offroad
NEOS Grenadier Driver and Passenger Side A-Pillar Grab Handle Mount by Agile Offroad. A multi-purpose grab handle designed with integrated front mount slot.

The passenger side was too easy, use a tiny screwdriver to pop open the two plastic covers, remove the original equipment grab handle with a T30 socket, and reinstall the Agile grab handle with the provided bolts using the same T30 socket.
Note that there is an airbag under the a-pillar plastic cover, so you want to remove the trim before drilling or cutting to avoid airbag damage.
On the drivers side, you need to cut some holes. Flip open the plastic cover over the mounting bolt, then remove the T30 bolt, and pry from the top, maneuvering the rear from under the door seal.
Once removed, tape the cardboard template provided from agile, mark and cut the holes using your preferred method.
For me, that involved using painters tape, marking with a sharpie, drilling the corners, and cutting the straight lines with a razor knife, cleaning up with files.
Then, reinstall the trim, put the factory T30 bolt in, pop the plastic cover on, install the new handle with the two provided T30 bolts.
Done!
This is a huge improvement.