McLaren Senna GTR

McLaren Senna GTR (42123-1) is a set in the Technic theme, released in 2021. It has 830 pieces.

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Number:42123-1
Released:January 2021
Pieces:830
Box size:38.2 × 26.2 × 7.1 cm
Theme:Technic

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 75.04 USD, taken from 30 days with a price on record.

Since 9/26/2026 the lowest shop price has fallen from 76.88 USD to 75.37 USD, by 2 % (based on 39 days with a price on record).

LEGO planned to retire this set in December 2023.

Product details

Number: 42123-1
Name: McLaren Senna GTR
Theme: Technic
Released: January 2021
Launched: January 2021
Retired: December 2023
Pieces: 830
RRP: ≈ 49.83 USD (69.99 CAD) (Canada)≈ 56.16 USD (49.99 EUR) (Germany)≈ 61.79 USD (239.99 PLN) (PL)≈ 60.29 USD (44.99 GBP) (United Kingdom)49.99 USD (United States)
Price per piece: ≈ 0.060 USD (0.084 CAD) (Canada)≈ 0.068 USD (0.060 EUR) (Germany)≈ 0.074 USD (0.289 PLN) (PL)≈ 0.073 USD (0.054 GBP) (United Kingdom)0.060 USD (United States)
Best price (30 days): 75.04 USD
Price per piece (best offer): 0.091 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

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View the price guide on BrickLink

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Pricing

Best price ever≈ 75.04 USD (67.42 EUR) Advertising Sealed · gross · idee+spiel · seen 10/29/2026 Not compared yet, no exchange rate: 30 in other currencies

Current best offer≈ 75.37 USD (67.42 EUR) Advertising Sealed · gross · idee+spiel · seen 11/3/2026

Price history

Lowest shop price now75.37 USD
Lowest ever 75.04 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	75.32 USD
October 2026	75.04 USD
September 2026	76.88 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

Nobody has sold this set recently.

Sources idee+spiel: 44 · Data in Brief: 30

Latest price from each shop

Sorted: lowest price first Show highest first

Countries (all)

Show prices for

Germany (DE)

Poland (PL)

Worldwide marketplaces are always shown. Nothing ticked shows every country.

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Only prices delivered there

What each source tells us:

Shops: the country they are in, and a delivery within it. None says whether it delivers abroad.
LEGO's own shops: one storefront per country, each delivering within its country.
Hugendubel: in Germany, delivering to Germany and to Austria.
eBay: the country the item is in, and a delivery within the country of the eBay site it is listed on.
BrickLink: averages over sellers worldwide - no seller's country and no delivery.

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idee+spiel Sealed · gross · seen 11/3/2026

≈ 75.37 USD (67.42 EUR)

Go to shop

Data in Brief Sealed · gross · sold 5/1/2023

179.00 PLN

Go to shop

Amazon.com BrickDb shows no Amazon prices. The link opens a search for this set on Amazon's own site.

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Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 49.83 USD (69.99 CAD) unknown tax basis Available since 1/2/2021 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

Germany ≈ 56.16 USD (49.99 EUR) gross Available since 12/27/2020 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

PL ≈ 61.79 USD (239.99 PLN) gross No availability dates published.Recorded by BrickDb since 10/21/2026

United Kingdom ≈ 60.29 USD (44.99 GBP) gross Available since 12/26/2020 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

United States 49.99 USD net Available since 1/2/2021 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Display case for this set

A display case made to fit this set, sold by a partner shop. The price is the shop's own, including VAT; delivery is extra.

McLaren Senna GTR Display Case for LEGO 42123 37.20 GBP grossplus 10.50 GBP deliverySold by iDisplayit · price read 10/7/2026

AdvertisingView at iDisplayit

Light kits for this set

LED lighting made to fit this set, sold by a partner shop. The price is the shop's own for its cheapest version, including VAT; delivery is extra.

20% off with the code BRICKDB20

Light Kit for McLaren Senna GTR 42123 from 24.99 EUR2 versionsSold by Game of Bricks · price read 11/3/2026

AdvertisingView at Game of Bricks

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

145 inventory lines

Catalogue image of the part Technic Pin Connector Hub with 2 Perpendicular Axles

Technic Pin Connector Hub with 2 Perpendicular Axles 10197· Black

×2

Catalogue image of the part Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges]

Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] 11153· Black

×1

Catalogue image of the part Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle

Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214· Dark Bluish Gray

×20

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Black

×6

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Light Bluish Gray

×2

Catalogue image of the part Technic Panel Fairing #21 5L Small Smooth, Side B

Technic Panel Fairing #21 5L Small Smooth, Side B 11946· Black

×9

Technic Panel Fairing #21 5L Small Smooth, Side B 11946· Blue

×2

Technic Panel Fairing #21 5L Small Smooth, Side B 11946· Light Bluish Gray

×1

Catalogue image of the part Technic Panel Fairing #22 5L Small Smooth, Side A

Technic Panel Fairing #22 5L Small Smooth, Side A 11947· Black

×9

Technic Panel Fairing #22 5L Small Smooth, Side A 11947· Blue

×2

Technic Panel Fairing #22 5L Small Smooth, Side A 11947· Light Bluish Gray

×1

Catalogue image of the part Technic Axle 5 with Stop

Technic Axle 5 with Stop 15462· Reddish Brown

×2

Catalogue image of the part Technic Pin Connector Round 1L [Beam]

Technic Pin Connector Round 1L [Beam] 18654· Black

×14

Technic Pin Connector Round 1L [Beam] 18654· Light Bluish Gray

×3

Catalogue image of the part Plate Special 1 x 2 with Pin Hole Underneath

Plate Special 1 x 2 with Pin Hole Underneath 18677· Black

×3

Catalogue image of the part Technic Panel Curved 3 x 13

Technic Panel Curved 3 x 13 18944· Black

×2

Same theme, piece count within 15 %

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McLaren Senna GTR

In numbers

Product details

BrickLink market data

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Display case for this set

Light kits for this set

Building instructions

Parts in this set

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