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McLaren Senna GTR

Snapshot

vs RRP
14% under
Per piece
3.6¢

Value per piece

cost per part at each reference

3.6¢lowest market value

about 41% under retail, which runs ~6.0¢ a piece

Reference

MSRP6.0¢
Used market3.6¢
New market5.2¢

Where to buy new

  • Walmartout of stock$59.00
  • AmazonLowest$62.99

New at retail · MSRP $49.99 · via BrickPicker

Set Retired

McLaren Senna GTR

Reference
42123-1
Theme
Technic
Year
2021
Parts
830

McLaren Senna GTR is a LEGO set from the LEGO Technic theme released in 2021. It is built from 830 pieces.

New avg$43.20Used avg$29.49MSRP$49.99

Avg. 3rd-party market prices via BrickPicker, not CollectORbuild seller prices

See full valuation & price history →Track its value free →
Value historytracking since Jul 27, 2026

Currently $43.20 new. We just started tracking this set’s value. The chart fills in as prices are re-checked over the coming weeks.

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Parts in this set (145)

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A peek at the pile. See the full list, grouped by color, on the parts page.

Sticker Sheet for Set 42123-1Photo shows a different color. This lot is (Not Applicable).1×Brick Curved 2 x 1 No Studs [1/2 Bow]6×Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges]1×Panel 1 x 2 x 1 [Rounded Corners]8×Plate 1 x 16×Plate 1 x 42×Plate 1 x 82×Plate 2 x 81×Plate Special 1 x 2 with Pin Hole Underneath3×Technic Axle 2 Notched2×Technic Axle 66×Technic Beam 1 x 13 Thick12×Technic Beam 1 x 15 Thick1×Technic Beam 1 x 2 Thick12×View all 145 →