🧱 Completeness checklist

Black

18 types · 40 pieces

7×Technic Axle 2 Notched320625×Technic Axle Connector with Axle Hole320394×Technic Axle and Pin Connector Angled #1320132×Technic Axle 1037372×Technic Axle 345192×Technic Axle 437052×Technic Axle 637062×Technic Axle and Pin Connector Angled #2 - 180°320342×Technic Axle and Pin Connector Angled #5 - 112.5°320152×Technic Pin with Friction Ridges Lengthwise and Center Slots27802×Technic Wedge Belt Wheel Tire28152×Tyre 30.4 x 14 VR65781×Plate Special 2 x 2 with 2 Pin Holes28171×Technic Axle 837071×Technic Axle and Pin Connector Perpendicular65361×Technic Beam 1 x 9 Bent (6 - 4) Thick66291×Technic Pin with Friction Ridges Lengthwise and Towball66281×Tile 2 x 2 with Groove3068b

Light Gray

4 types · 15 pieces

5×Technic Axle Pin without Friction Ridges Lengthwise37495×Technic Bush37133×Technic Gear 16 Tooth with Round Holes [Old Style]40192×Technic Bush 1/2 Smooth with Axle Hole Reduced32123a

Yellow

4 types · 9 pieces

4×Technic Beam 1 x 3 Thin66322×Technic Wedge Belt Wheel [aka Pulley]41852×Wheel Rim 24 x 14 VR with Center Axle Hole29941×Technic Pin Connector Round [No Slot]75535

Purple

3 types · 5 pieces

2×Hose, Ribbed 7mm D. 7L / 5.6cm78c072×Technic Beam 1 x 11.5 Double Bent Thick320091×Technic Reel 3 x 232012

Dark Gray

1 types · 1 pieces

1×Technic Axle 3 with Stud6587

White

1 types · 1 pieces

1×String, Elastic Thin 82L71831c82

[No Color/Any Color]

1 types · 1 pieces

1×Sticker Sheet for Set 2854-172599

Tick a part when you've found them all. Your ticks are saved on this device. Counts are the official Rebrickable inventory for this set — spares included where the set ships them.