LEGO Service Packs / Technic Sets

Technic service packs were the parts packs of the Technic line from 1978 to 1999, sold for builders who wanted more of a part than their sets held or who were making models of their own. They follow the growth of Technic itself.

The first ones held axles, bushes, gear racks and beams, and when pneumatics arrived in 1984 they were followed by packs of cylinders, valves, pumps and tubing. Optosensors and touch sensors in 1986 and 1987 went with the computer control kits used in schools, and the Flex System of 1991 brought push and pull cables that could steer a model from a distance.

The packs also covered shock absorbers, universal joints, differentials, chains, motors and wheels. A few were made for a single set, like 5117 Compressor Pump for 8868, and the late packs included a Technic suitcase for storage and alloy wheels with tyres.