The vehicles will travel from the Perth SpeedDome in Midvale to Yanchep Lagoon on Sunday led by the reconditioned 4WD Mr Wittstock owned before he died, aged just 22, in a powered paragliding crash on April 13.
Mr Wittstock�s family and mechanically minded mates have been putting the finishing touches on the off-road vehicle, named �Cruzilla�, in preparation for the event.
Co-organiser Thomas Bishop said he had not known Mr Wittstock personally but the tragedy had moved him to act.
�Having a fianc�e and young child myself, it really hit home,� he said.
�As a fellow member of the 4×4 community a few of us have banded together to get this happening.�
The group has received donations of raffle items and food to be sold to raise funds for Mr Wittstock�s fianc�e Kelley Romanelli and their newborn daughter.
A donation account has been set up here.
Anyone wishing to join the convoy can contact organisers through the Kyle Wittstock Memorial Convoy Facebook page.