20 bag inventories added in the last 24 hours thanks to 18 contributors. Learn more

42123 Available

McLaren Senna GTR

2021 Technic 830 parts 131 lots 3 bags

Thanks to Gerry, Alex, Paul Higgins, Margaret, Ben Bigelow, Dewey Brix, WB, ayush, Orange_Puzzler, Nicholas Gruendl, HadesArmy, trainphreak, Julien Mahin, Otter, Skogbit, BitterBricker for helping identify parts

42123 McLaren Senna GTR

Bag inventory

Loading bag…

1

322 parts 57 lots ~203.80g
Technic, Axle 6L in Black
Black

Technic, Axle 6L

3706 ×3
Technic, Axle and Pin Connector Perpendicular in Black
Black

Technic, Axle and Pin Connector Perpendicular

6536 ×11
Technic, Axle and Pin Connector Perpendicular 3L with 2 Pin Holes in Black
Black

Technic, Axle and Pin Connector Perpendicular 3L with 2 Pin Holes

42003 ×11
Technic, Axle and Pin Connector Perpendicular Double Split in Black
Black

Technic, Axle and Pin Connector Perpendicular Double Split

41678 ×5
Technic, Gear 12 Tooth Double Bevel in Black
Black

Technic, Gear 12 Tooth Double Bevel

32270 ×1
Technic, Gear Rack 1 x 7 with Axle and Pin Holes in Black
Black

Technic, Gear Rack 1 x 7 with Axle and Pin Holes

87761 ×1
Technic, Liftarm Thick 1 x 1 (Spacer) in Black
Black

Technic, Liftarm Thick 1 x 1 (Spacer)

18654 ×10
Technic, Liftarm Thick 1 x 13 in Black
Black

Technic, Liftarm Thick 1 x 13

41239 ×6
Technic, Liftarm Thick 1 x 5 in Black
Black

Technic, Liftarm Thick 1 x 5

32316 ×11
Technic, Liftarm Thin 1 x 2 - Axle Holes in Black
Black

Technic, Liftarm Thin 1 x 2 - Axle Holes

41677 ×6
Technic, Liftarm Thin 1 x 6 in Black
Black

Technic, Liftarm Thin 1 x 6

32063 ×4
Technic, Liftarm, Modified Bent Thick L-Shape 2 x 4 in Black
Black

Technic, Liftarm, Modified Bent Thick L-Shape 2 x 4

32140 ×4
Technic, Liftarm, Modified Bent Thick L-Shape 3 x 5 in Black
Black

Technic, Liftarm, Modified Bent Thick L-Shape 3 x 5

32526 ×8
Technic, Pin Connector Perpendicular Double 3L in Black
Black

Technic, Pin Connector Perpendicular Double 3L

32557 ×1
Technic, Pin Connector Toggle Joint Smooth Double with 2 Pins in Black
Black

Technic, Pin Connector Toggle Joint Smooth Double with 2 Pins

48496 ×2
Technic, Pin with Short Friction Ridges in Black
Black

Technic, Pin with Short Friction Ridges

2780 ×45
Technic, Axle 1L with Pin with Friction Ridges in Blue
Blue

Technic, Axle 1L with Pin with Friction Ridges

43093 ×7
Technic, Axle and Pin Connector Angled #5 - 112.5 degrees in Blue
Blue

Technic, Axle and Pin Connector Angled #5 - 112.5 degrees

32015 ×2
Technic, Axle Connector with Axle Hole in Blue
Blue

Technic, Axle Connector with Axle Hole

32039 ×2
Technic, Liftarm Thick 1 x 15 in Blue
Blue

Technic, Liftarm Thick 1 x 15

32278 ×2
Technic, Pin 1/2 without Friction Ridges in Blue
Blue

Technic, Pin 1/2 without Friction Ridges

4274 ×8
Technic, Pin 3L with Friction Ridges in Blue
Blue

Technic, Pin 3L with Friction Ridges

6558 ×29
Technic, Pin with Friction Ridges and Pin Hole in Blue
Blue

Technic, Pin with Friction Ridges and Pin Hole

15100 ×2
Technic, Axle 1L with Pin 2L with Friction Ridges in Dark Bluish Gray
Dark Bluish Gray

Technic, Axle 1L with Pin 2L with Friction Ridges

11214 ×12
Technic, Axle 4L with Stop in Dark Bluish Gray
Dark Bluish Gray

Technic, Axle 4L with Stop

87083 ×3
Technic, Axle 8L with Stop in Dark Bluish Gray
Dark Bluish Gray

Technic, Axle 8L with Stop

55013 ×1
Technic, Axle Connector 2L (Smooth with x Hole + Orientation) in Dark Bluish Gray
Dark Bluish Gray

Technic, Axle Connector 2L (Smooth with x Hole + Orientation)

6538c ×4
Technic, Liftarm Thick 1 x 2 - Axle Hole in Dark Bluish Gray
Dark Bluish Gray

Technic, Liftarm Thick 1 x 2 - Axle Hole

60483 ×6
Technic, Liftarm Thick 1 x 3 in Dark Bluish Gray
Dark Bluish Gray

Technic, Liftarm Thick 1 x 3

32523 ×2
Technic, Liftarm Thick 1 x 9 in Dark Bluish Gray
Dark Bluish Gray

Technic, Liftarm Thick 1 x 9

40490 ×4
Technic, Panel Curved 3 x 5 x 3 in Dark Bluish Gray
Dark Bluish Gray

Technic, Panel Curved 3 x 5 x 3

24116 ×2
Technic Bush in Light Bluish Gray
Light Bluish Gray

Technic Bush

3713 ×5
Technic Bush 1/2 Smooth in Light Bluish Gray
Light Bluish Gray

Technic Bush 1/2 Smooth

4265c ×4
Technic, Axle 5L in Light Bluish Gray
Light Bluish Gray

Technic, Axle 5L

32073 ×3
Technic, Axle 9L in Light Bluish Gray
Light Bluish Gray

Technic, Axle 9L

60485 ×3
Technic, Axle and Pin Connector Angled #1 in Light Bluish Gray
Light Bluish Gray

Technic, Axle and Pin Connector Angled #1

32013 ×4
Technic, Axle and Pin Connector Perpendicular 3L with Center Pin Hole in Light Bluish Gray
Light Bluish Gray

Technic, Axle and Pin Connector Perpendicular 3L with Center Pin Hole

32184 ×3
Technic, Axle and Pin Connector Perpendicular Double in Light Bluish Gray
Light Bluish Gray

Technic, Axle and Pin Connector Perpendicular Double

32291 ×2
Technic, Liftarm Thick 1 x 7 in Light Bluish Gray
Light Bluish Gray

Technic, Liftarm Thick 1 x 7

32524 ×4
Technic, Liftarm, Modified Bent Thick L-Shape 2 x 4 in Light Bluish Gray
Light Bluish Gray

Technic, Liftarm, Modified Bent Thick L-Shape 2 x 4

32140 ×2
Technic, Pin 3L with Friction Ridges and Center Pin Hole in Light Bluish Gray
Light Bluish Gray

Technic, Pin 3L with Friction Ridges and Center Pin Hole

87082 ×3
Technic, Pin 3L with Friction Ridges and Stop Bush in Light Bluish Gray
Light Bluish Gray

Technic, Pin 3L with Friction Ridges and Stop Bush

32054 ×7
Technic, Pin Connector Perpendicular 2 x 2 Bent in Light Bluish Gray
Light Bluish Gray

Technic, Pin Connector Perpendicular 2 x 2 Bent

44809 ×4
Technic, Pin Connector Perpendicular 3L with 4 Pins in Light Bluish Gray
Light Bluish Gray

Technic, Pin Connector Perpendicular 3L with 4 Pins

48989 ×2
Technic, Pin Connector Perpendicular Double 3L in Light Bluish Gray
Light Bluish Gray

Technic, Pin Connector Perpendicular Double 3L

32557 ×4
Technic, Pin without Friction Ridges in Light Bluish Gray
Light Bluish Gray

Technic, Pin without Friction Ridges

3673 ×6
Technic, Axle 2L Notched in Red
Red

Technic, Axle 2L Notched

32062 ×8
Technic, Axle 4L in Red
Red

Technic, Axle 4L

3705 ×2
Technic, Axle and Pin Connector Angled #2 - 180 degrees in Red
Red

Technic, Axle and Pin Connector Angled #2 - 180 degrees

32034 ×6
Technic, Liftarm Thin 1 x 3 - Axle Holes in Red
Red

Technic, Liftarm Thin 1 x 3 - Axle Holes

6632 ×2
Technic, Axle 3L with Stop in Reddish Brown
Reddish Brown

Technic, Axle 3L with Stop

24316 ×11
Technic, Axle 5L with Stop in Reddish Brown
Reddish Brown

Technic, Axle 5L with Stop

15462 ×1
Technic, Gear 12 Tooth Bevel in Tan
Tan

Technic, Gear 12 Tooth Bevel

6589 ×4
Technic, Pin 3L without Friction Ridges in Tan
Tan

Technic, Pin 3L without Friction Ridges

32556 ×2
Technic Bush 1/2 Smooth in Yellow
Yellow

Technic Bush 1/2 Smooth

4265c ×8
Technic, Axle 3L in Yellow
Yellow

Technic, Axle 3L

4519 ×3
Technic, Axle 7L in Yellow
Yellow

Technic, Axle 7L

44294 ×4

Frequently asked questions

This bag inventory was built by following the official LEGO building instructions step by step. At every step, we recorded which pieces were used and which numbered bag they came from, resulting in a complete parts list per bag.

Each numbered bag contains a specific subset of the set's total parts. By selecting a bag above, you can see every piece it includes — with part images, color details, and exact quantities.

Click on a bag, then use the export buttons in the toolbar. You can download a PDF for easy reference, or a BSX file — a BrickLink-compatible XML format you can import into tools like BrickStore.

We use bag 0 to list all parts that are outside of numbered bags, such as sticker sheets or some larger parts that are often not in any bag but directly in the box.

Since inventories are built by hand, mistakes can happen. If you spot anything wrong, please contact us so we can review and correct it.