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LEGO Bowser's Muscle Car Expansion Set 71431

Bowser, a large green and yellow turtle-like character, sits in a purple, yellow, and grey muscle car with spikes. Two black Bob-ombs with flames are next to the car.

Koopa King's Custom Cruiser

Bowser commands his custom-built muscle car, ready to tear up any course with its aggressive design. The striking purple and yellow livery, combined with those chunky spiked wheels, ensures he dominates the race. This vehicle just screams raw power and mischievous intent, perfect for any Koopa King.

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$29.99
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Set # 71431
Released 2024
Pieces 458
Price / Piece 6.5¢
Figures None
Age 8+
Scale & Brick Value Piece Volume & Pricing Ranks
Piece Rank #687 Top 45% active
Historic Scale #2,646 Top 14% of 20,150
Part Efficiency #202 6.2¢/pc • Top 14%
Collector Insights Verified Oct 11, 2026

Includes 1 exclusive mold and 6 rare elements recorded across official inventories.

This set also includes 2 light extensions
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Categories: Vehicles Cars Movie & Pop Culture Cars Themes Gaming & Retro Arcade

Set 71431 Build Specifications & Overview

Complete build timeline, spatial dimensions, and display footprint analysis.

Value Breakdown

Est. Build Time (*Pieces per minute)
Casual 4h 2 ppm*
AFOL (Avg) 2h 4 ppm*
Master Builder 1.1h 7 ppm*
Avg Price / Hour
$14.99/hr
Price Per Basic Brick
$0.06

Highly valuable! 32% cheaper than average LEGO sets.

Display Dimensions

Height 2.5 in (6.3 cm) 6 Bricks + 1 Plate high
Width 4 in (10.2 cm) 13 Studs wide
Depth 6 in (15.2 cm) 19 Studs deep
Display Footprint 24.0 sq in (154.8 sq cm) 13 × 19 Studs

The Scale Check

Height equivalent to approx 1.6 minifigures stacked.

Display Fit
Standard Shelf Friendly (Kallax/Billy)
Building Instructions

Download or view the official PDF
Third-Party Display Extension

LED Kits for LEGO Bowser's Muscle Car: Let the Koopa King Shine

BUILDS:2|STARTER: $17.49|PRO: $21.98|MEDIAN: $21.98

Bowser's Muscle Car is a compact, display-friendly set, and these two LED kits add a fiery glow to the scene. BrickBling's modular micro-LEDs offer precise concealment at a premium, while Lightailing's pre-soldered harness delivers a straightforward, budget-tier approach. Whether you're after intricate ambiance or simple illumination, the choice boils down to wiring philosophy and price point.

BrickBling LED kit for LEGO Bowser's Muscle Car Expansion Set 71431
premium ceiling +$4.49(vs Cheapest Starter Kit)

Micro-LEDs for the Koopa King's Cruiser

$21.98
Starting At
Standard Version$21.98

BrickBling's kit lands as the premium option at $21.98, focusing on underglow and engine bay illumination for maximum showpiece effect. Its modular micro-LEDs allow for discreet placement, and with a single standard edition, there are no variant choices to juggle. This kit is the ideal pick for collectors who want a clean, detailed lighting display that blends seamlessly with the build.

Set Cost Ratio73.29%
RGB CapableNo
RemoteNone
Price Rank#2 of 2
View at BrickBling
Lightailing LED kit for LEGO Bowser's Muscle Car Expansion Set 71431
budget floor

Simple Harness to Light Bowser's Ride

$17.49
Starting At
Standard Version$17.49

Lightailing's kit enters as the budget floor at $17.49, bringing a pre-soldered harness that simplifies the wiring path through the set. The harness's thicker wires are a trade-off for sturdiness, and with only a single standard edition, you have no variant decisions to make. This kit suits builders who prioritize a quick, no-frills lighting solution at the lowest entry price.

Set Cost Ratio58.32%
RGB CapableNo
RemoteNone
Price Rank#1 of 2
View at Lightailing

Lighting kits and display add-ons are custom third-party accessories produced independently. They are not manufactured, sponsored, or endorsed by the LEGO Group.