LEGO System Sets

About LEGO System

LEGO System is a line of LEGO sets grouped under this theme name. The line has produced 200 sets between 1955 and 1971, with the Imagination Set 5 (#105) as one of its largest at 917 pieces.

Notable System Sets

Imagination Set 5

#105 · 1971 · 917 pcs

Master Builder Set

#004 · 1966 · 817 pcs

Town Plan

#842 · 1969 · 798 pcs

Town Plan

#725 · 1961 · 785 pcs

Town Plan - Continental European

#810 · 1961 · 756 pcs

Basic Building Set with Train

#080 · 1967 · 712 pcs

Imagination Set 3

#103 · 1971 · 568 pcs

Junior Constructor

#717 · 1961 · 482 pcs

Newest System Releases

The most recent System sets from the LEGO catalogue.

Imagination Set 5

#105 · 1971 · 917 pcs

Imagination Set 3

#103 · 1971 · 568 pcs

Imagination Set 1

#101 · 1971 · 298 pcs

Factory With Conveyor Belt

#248 · 1971 · 208 pcs

Mini-Wheel Construction Set

#349 · 1971 · 178 pcs

House and Garden Extra Parts Kit

#167 · 1971 · 112 pcs

Vehicle Extra Parts Kit

#66 · 1971 · 55 pcs

Remote Control Car Set

#311 · 1970 · 189 pcs

Rare & Retired System Sets

Older flagship-tier System sets that are likely no longer in production. Often valuable to collectors.

Imagination Set 5

#105 · 1971 · 917 pcs

Master Builder Set

#004 · 1966 · 817 pcs

Town Plan

#842 · 1969 · 798 pcs

Town Plan

#725 · 1961 · 785 pcs

Town Plan - Continental European

#810 · 1961 · 756 pcs

Basic Building Set with Train

#080 · 1967 · 712 pcs

Imagination Set 3

#103 · 1971 · 568 pcs

Junior Constructor

#717 · 1961 · 482 pcs

Best System Sets for Beginners

Smaller System sets that are good entry points without overwhelming a first-time builder in this theme.

Factory With Conveyor Belt

#248 · 1971 · 208 pcs

Mini-Wheel Construction Set

#349 · 1971 · 178 pcs

House and Garden Extra Parts Kit

#167 · 1971 · 112 pcs

Imagination Set 1

#101 · 1971 · 298 pcs

Remote Control Car Set

#311 · 1970 · 189 pcs

Mini-Wheel Car and Truck Set

#348 · 1970 · 187 pcs

Browse System by Size

Every System set grouped by piece count — pick the size that matches the build time you have.

Starter (≤50 pieces)

8 shown

Small, quick builds — usually under 20 minutes.

Number Bricks

#237 · 1960 · 50 pcs

VW Auto Showroom

#307 · 1958 · 50 pcs

50 lettered bricks (The Building Toy)

#434 · 1966 · 50 pcs

50 numbered bricks (The Building Toy)

#437 · 1966 · 50 pcs

50 bricks, curved and round

#923 · 1969 · 50 pcs

VW Auto Showroom

#1307 · 1957 · 50 pcs

Assorted Basic Bricks - Red

#051 · 1966 · 50 pcs

Assorted Basic Bricks - White

#052 · 1966 · 50 pcs

Quick (51–150 pieces)

8 shown

Compact sets finished in a single sitting.

Church

#1309 · 1957 · 150 pcs

Church

#309 · 1958 · 149 pcs

Train Ferry

#343 · 1968 · 147 pcs

Basic Building Set

#011 · 1968 · 145 pcs

London Bus

#313 · 1966 · 140 pcs

Truck

#317 · 1963 · 125 pcs

Warehouse

#341 · 1968 · 123 pcs

Two-Engine Airplane

#320 · 1965 · 120 pcs

Moderate (151–400 pieces)

8 shown

Afternoon builds with enough depth to feel substantial.

Motorized Truck Set

#371 · 1967 · 314 pcs

Super Wheel Toy Set

#610 · 1965 · 304 pcs

Imagination Set 1

#101 · 1971 · 298 pcs

Medium Basic Set

#285 · 1966 · 288 pcs

Velveeta Set No. 4 with Carrying Case

#4 · 1967 · 283 pcs

Doll Set

#905 · 1963 · 266 pcs

Basic Building Set

#055 · 1968 · 256 pcs

Train

#323 · 1964 · 253 pcs

Substantial (401–800 pieces)

8 shown

Multi-hour builds across several numbered bags.

Town Plan

#842 · 1969 · 798 pcs

Town Plan

#725 · 1961 · 785 pcs

Town Plan - Continental European

#810 · 1961 · 756 pcs

Basic Building Set with Train

#080 · 1967 · 712 pcs

Imagination Set 3

#103 · 1971 · 568 pcs

Junior Constructor

#717 · 1961 · 482 pcs

Deluxe Set with Storage Case

#502 · 1968 · 470 pcs

Deluxe Building Set

#450 · 1963 · 468 pcs

Advanced (801–1,500 pieces)

2 shown

Serious projects — typically spanning multiple sessions.

Imagination Set 5

#105 · 1971 · 917 pcs

Master Builder Set

#004 · 1966 · 817 pcs

System Through the Decades

A sample of notable System sets from each decade the theme has been in production.

1970s

Imagination Set 5

#105 · 1971 · 917 pcs

Imagination Set 3

#103 · 1971 · 568 pcs

Imagination Set 1

#101 · 1971 · 298 pcs

Factory With Conveyor Belt

#248 · 1971 · 208 pcs

Mini-Wheel Construction Set

#349 · 1971 · 178 pcs

House and Garden Extra Parts Kit

#167 · 1971 · 112 pcs

1960s

Town Plan

#842 · 1969 · 798 pcs

Motorized Truck Set

#310 · 1969 · 185 pcs

Super Value Set

#102 · 1969 · 102 pcs

52 Flat Tile Bricks

#971 · 1969 · 52 pcs

Number Bricks

#987 · 1969 · 52 pcs

Alphabet Bricks

#988 · 1969 · 52 pcs

1950s

1 x 2 and 3 x 2 Sloping Bricks, Red

#281 · 1959 · 21 pcs

Church

#309 · 1958 · 149 pcs

Fire Station

#308 · 1958 · 111 pcs

Letter Bricks

#234 · 1958 · 54 pcs

VW Auto Showroom

#307 · 1958 · 50 pcs

VW Garage

#306 · 1958 · 45 pcs