# LEGO C8504-1 — Ultrarex (8504 + 8505 + 8506 + 8507) (1999)

Source: https://www.brickmissing.com/sets/C8504-1-ultrarex-8504-8505-8506-8507
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

## Set facts

- Set number: C8504-1
- Name: Ultrarex (8504 + 8505 + 8506 + 8507)
- Theme: Technic
- Released: 1999
- Pieces: 88
- Distinct part + colour lots: 34
- Build difficulty: beginner
- Repairability: 35.3% of this set's lots are hard to replace (12 of 34 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (34 lots, 88 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 6 | Technic Pin with Friction Ridges Lengthwise and Center Slots | Black | 2780 | 278026 | — |
| 6 | Technic Axle 2 Notched | Black | 32062 | 4109810 | €0,07 |
| 1 | Technic Axle 5 | Black | 32073 | 4114740 | — |
| 10 | Technic Bush 1/2 Smooth with Axle Hole Reduced | Tan | 32123a | 4206210 | — |
| 2 | Technic Block 3 x 6 x 1 & 2/3 | Black | 32165 | 4119352 | — |
| 2 | Technic Gearbox Half | Light Bluish Gray | 32166 | 4119365 | — |
| 2 | Technic Rectangular Gearbox Half | Black | 32167 | 4119353 | — |
| 2 | Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint | Yellow | 32168 | 4119296 | — |
| 1 | Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint | Black | 32168 | 4119300 | — |
| 1 | Large Figure Visor / Limb Cover, Armour [Plain] | Trans-Brown | 32169 | 4120239 | — |
| 1 | Large Figure Visor / Limb Cover, Armour with Jet / Judge Print | Yellow | 32169pr0007 | 4119584 | — |
| 1 | Technic Gear Rack Double with Ball Joint | Purple | 32170 | 4120258 | — |
| 2 | Technic Pin Connector Block 3 x 3 x 1 | Black | 32172 | 4119317 | — |
| 1 | Technic Pin Connector Block 3 x 3 x 1 | Purple | 32172 | 4119314 | — |
| 1 | Technic Pin Connector Block 3 x 3 x 1 | Tan | 32172 | 4119315 | — |
| 2 | Technic Pin Connector Block 3 x 3 x 1 | Red | 32172 | 4119316 | — |
| 4 | Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints | Black | 32173 | 4119324 | — |
| 2 | Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints | Yellow | 32173 | 4119321 | — |
| 4 | Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints | Dark Gray | 32173 | 4120150 | — |
| 4 | Technic Axle Connector 2 x 3 with Ball Socket, Open Sides | Black | 32174 | 4119328 | — |
| 5 | Technic Axle Connector 2 x 3 with Ball Socket, Open Sides | Purple | 32174 | 4119327 | — |
| 4 | Technic Axle Connector 2 x 3 with Ball Socket, Open Sides | Tan | 32174 | 4119329 | — |
| 5 | Technic Axle Connector 2 x 3 with Ball Socket, Open Sides | Red | 32174 | 4119330 | — |
| 2 | Technic Beam 1 x 7 with Fan | Black | 32177 | 4120182 | — |
| 2 | Technic Gear 8 Tooth | Black | 3647 | 4120181 | — |
| 1 | Technic Gear 8 Tooth | Tan | 3647 | 4120154 | — |
| 2 | Technic Gear 8 Tooth | Purple | 3647 | 4120122 | — |
| 1 | Technic Gear 40 Tooth | Light Bluish Gray | 3649 | 4120109 | — |
| 2 | Technic Axle 4 | Black | 3705 | 370526 | €0,08 |
| 2 | Technic Axle 6 | Black | 3706 | 370626 | €0,12 |
| 1 | Technic Bush | Light Gray | 3713 | 371302 | — |
| 1 | Technic Axle 3 | Black | 4519 | 451926 | — |
| 1 | Technic Worm Gear | Black | 4716 | 471626 | — |
| 4 | Technic Axle 3 with Stud | Dark Gray | 6587 | 4113884 | — |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/C8504-1-ultrarex-8504-8505-8506-8507
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/C8504-1-ultrarex-8504-8505-8506-8507