Ultrarex (8504 + 8505 + 8506 + 8507)
C8504-1
Released: 1999 · Parts: 88 · Theme: Throwbot Slizer
Ultrarex (8504 + 8505 + 8506 + 8507) (C8504-1) is a Throwbot Slizer LEGO set released in 1999 with 88 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Throwbot Slizer sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 34 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1999 (27 years ago — may be retired)
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Catalog scale
88 parts listed · 34 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~164 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
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Market value
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Parts in this set
34 parts · updating…
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Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint32168 · ×1 · Black -
Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint32168 · ×2 · Yellow -
Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints32173 · ×4 · Dark Gray -
Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints32173 · ×2 · Yellow -
Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints32173 · ×4 · Black -
![Large Figure Visor / Limb Cover, Armour [Plain]](https://cdn.rebrickable.com/media/parts/photos/40/x209-40-19280bc0-723a-44f0-9d6e-937c0280e2b4.jpg)
Large Figure Visor / Limb Cover, Armour [Plain]32169 · ×1 · Trans-Brown -
Large Figure Visor / Limb Cover, Armour with Jet / Judge Print32169pr0007 · ×1 · Yellow -
Technic Axle 2 Notched32062 · ×6 · Black -
Technic Axle 34519 · ×1 · Black -
Technic Axle 3 with Stud6587 · ×4 · Dark Gray -
Technic Axle 43705 · ×2 · Black -
Technic Axle 532073 · ×1 · Black -
Technic Axle 63706 · ×2 · Black -
Technic Axle Connector 2 x 3 with Ball Socket, Open Sides32174 · ×5 · Purple -
Technic Axle Connector 2 x 3 with Ball Socket, Open Sides32174 · ×5 · Dark Turquoise -
Technic Axle Connector 2 x 3 with Ball Socket, Open Sides32174 · ×4 · Tan -
Technic Axle Connector 2 x 3 with Ball Socket, Open Sides32174 · ×4 · Black -
Technic Beam 1 x 7 with Fan32177 · ×2 · Black -
Technic Block 3 x 6 x 1 & 2/332165 · ×2 · Black -
Technic Bush3713 · ×1 · Light Gray -
Technic Bush 1/2 Smooth with Axle Hole Reduced32123a · ×10 · Light Gray -
Technic Gear 40 Tooth3649 · ×1 · Green -
Technic Gear 8 Tooth3647 · ×1 · Tan -
Technic Gear 8 Tooth3647 · ×2 · Purple -
Technic Gear 8 Tooth3647 · ×2 · Black -
Technic Gear Rack Double with Ball Joint32170 · ×1 · Purple -
Technic Gearbox Half32166 · ×2 · Green -
Technic Pin Connector Block 3 x 3 x 132172 · ×1 · Tan -
Technic Pin Connector Block 3 x 3 x 132172 · ×2 · Black -
Technic Pin Connector Block 3 x 3 x 132172 · ×1 · Purple -
Technic Pin Connector Block 3 x 3 x 132172 · ×2 · Dark Turquoise -
Technic Pin with Friction Ridges Lengthwise and Center Slots2780 · ×6 · Black -
Technic Rectangular Gearbox Half32167 · ×2 · Black -
Technic Worm Gear4716 · ×1 · Black