| Image | Item No. | Description |
| 708-1 (Inv) | 12V Extension Cord Pack for Switch Point, 2 Meters Long
1 Part, 1970
Catalog: Sets: Train: Supplemental: 12V |
| 49901-1 (Inv) | Erweiterungssortiment zum LEGO Composing Set (Extension Assortment for LEGO Composing Set 9550)
121 Parts, 1990
Catalog: Sets: Educational & Dacta |
| 5003408-1 (Inv) | Homeschool Pneumatics Extension Pack
1 Set, 1 Gear, 2008
Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 5003424-1 (Inv) | Homeschool Renewable Energy Extension Pack
1 Set, 1 Gear, 2014
Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 8886-1 (Inv) | Power Functions Extension Wire (20cm)
1 Part, 2008
Catalog: Sets: Power Functions |
| 8871-1 (Inv) | Power Functions Extension Wire (50cm)
1 Part, 2009
Catalog: Sets: Power Functions |
| 60656 | Electric, Power Functions Extension with one Light Bluish Gray End (length 20cm)
Catalog: Parts: Electric, Wire & Connector |
| 58118 | Electric, Power Functions Extension with one Light Bluish Gray End (length 50cm)
Catalog: Parts: Electric, Wire & Connector |
| 970c00pb0845 | Hips and Legs with Covered Belts and Overcoat Extension Pattern
Catalog: Parts: Minifigure, Legs, Decorated |
| 970c00pb0828 | Hips and Legs with Crossed Dark Tan Belts with Belts on Knees and Overcoat Extension Pattern
Catalog: Parts: Minifigure, Legs, Decorated |
| 970c00pb0827 | Hips and Legs with Sand Green Knee Pads and Overcoat Extension Pattern
Catalog: Parts: Minifigure, Legs, Decorated |
| 970c00pb0844 | Hips and Legs with Tan, Brown and Orange Overcoat Extension Pattern
Catalog: Parts: Minifigure, Legs, Decorated |
| 970c00pb0799 | Hips and Legs with Two Reddish Brown Belts and Reddish Brown Overcoat Extension Pattern
Catalog: Parts: Minifigure, Legs, Decorated |
| 66899 | Hips Extension Angled, Slime with Organic Flow Detail
Catalog: Parts: Minifigure, Body Part |
| 62695 | Hook Grappling with Pin and Extension
Catalog: Parts: Hook |
| 15447 | Leg Extension
Catalog: Parts: Minifigure, Body Part |
| 74188c01 | Magnet Brick, Modified 2 x 4 Sealed Base with Extension Plate with 2 Studs and Hole
Catalog: Parts: Magnet |
| 85946pb01 | Minifigure, Head, Modified Frenzy Pattern with Lime Eyes and Open Jagged Mouth, Torso Extension with Handles
Catalog: Parts: Minifigure, Head, Modified |
| 41815c01 | Minifigure, Utensil Cylinder with Trans-Light Blue Water Extension and Black Handle
Catalog: Parts: Minifigure, Utensil |
| 41815c02 (Inv) | Minifigure, Utensil Cylinder with Trans-Light Blue Water Extension and Black Handle with Black Rubber Squeezable Bladder (41815c01 / 41818)
Catalog: Parts: Minifigure, Utensil |
| 6065 | Plant Prickly Bush 2 x 2 x 3 Extension with 2 x 2 Center
Catalog: Parts: Plant |
| 61406pb05 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Black Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb08 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Dark Azure Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb03 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Light Bluish Gray Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb02 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Lime Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb04 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Orange Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb06 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Sand Green Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb07 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible White Tip Pattern
Catalog: Parts: Plate, Modified |
| 61406pb01 | Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Yellow Tip Pattern
Catalog: Parts: Plate, Modified |
| 65727 | Shoulders Extension, Slime with 2 Head Studs
Catalog: Parts: Minifigure, Body Part |
| 32187 | Technic Driving Ring Extension
Catalog: Parts: Technic |
| 35186 | Technic Driving Ring Extension with 8 Teeth Inside and Outside
Catalog: Parts: Technic |
| 35186pb01 | Technic Driving Ring Extension with 8 Teeth Inside and Outside with White Camera Dial Graduated Lines Pattern (Sticker) - Set 21345
Catalog: Parts: Technic |
| 53586 | Technic, Axle and Pin Connector Perpendicular with Extension
Catalog: Parts: Technic, Connector |
| 61184 | Technic, Pin 1/2 with 2L Bar Extension (Flick Missile)
Catalog: Parts: Technic, Pin |
| 5003440 (Inv) | Homeschool LEGO Education WeDo Extension Activities Pack I
Catalog: Books: Curriculum Activity Book: Educational & Dacta |
| 5003441 (Inv) | Homeschool LEGO Education WeDo Extension Activities Pack II
Catalog: Books: Curriculum Activity Book: Educational & Dacta |
| 5003427 | WeDo Adventure Stories Extension Activity Pack
Catalog: Books: Curriculum Activity Book: Educational & Dacta: WeDo |
| 5003420 | WeDo Amazing Mechanisms Extension Activity Pack
Catalog: Books: Curriculum Activity Book: Educational & Dacta: WeDo |
| 5003428 (Inv) | WeDo Extension Activities Bundle Pack
Catalog: Books: Curriculum Activity Book: Educational & Dacta: WeDo |
| 5003421 | WeDo Play Soccer Extension Activity Pack
Catalog: Books: Curriculum Activity Book: Educational & Dacta: WeDo |
| 5003426 | WeDo Wild Animals Extension Activity Pack
Catalog: Books: Curriculum Activity Book: Educational & Dacta: WeDo |
| 5003279 | Education BuildToExpress Extension Activity Pack
Catalog: Gear: Software: Educational & Dacta |