LEGO Vintage Space Blacktron Tri-Wheeled Tyrax NEW IN SEALED BOX 6851 NISB | eBay
LEGO 6851 Tri-Wheeled Tyrax Set Parts Inventory and Instructions - LEGO Reference Guide
6851-1: Tri-Wheeled Tyrax (building steps) from BrickLink Studio
LEGO 6851 Tri-Wheeled Tyrax Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO 6851 Tri-Wheeled Tyrax Instructions, Space
SURMALEGOBROS - 6851
Neo Space Blacktron 6851 Tri-Wheeled Tyrax Squad. Only reason I could see for a tricycle would be a mounted gun on the back. Should easily be able to modify it to have