The Diomars-Nero (Japanese: ディオマース・ネロ, Diomāsu Nero) is a Mechanical Mini 4WD car released by Tamiya in January 1999. The Fully Cowled Mini 4WD version of the car with the VS Chassis was later released in December 2002.

It was featured in the manga and anime Bakusou Kyoudai Let's & Go! MAX as Nero Stella Borzoi's machine.

General info[edit | edit source]

The Diomars-Nero features the open-wheel, low-height body design. The bodyshell consists of the base, the upper cowls, the rear spoiler and the movable head that was connected to the base.

Unique to this car is the ability to switch between Search Mode (サーチモード) and Terminate Mode (ターミネートモード) by rotating the head and moving it to the front and rear and sliding the upper cowl forward and backward. Its mechanical chassis has the unique four-wheel-steering mechanism, which can be switched between the normal steering mode, the parallel steering mode and spin-action steering mode by rotating the dial located underneath the chassis.

Unlike other cars in the Mechanical Mini 4WD lineup, the entire bodyshell can be attached to most (if not all) rear-motor chassis without prior modification.

As the bodyshell of the original Diomars-Nero was molded in clear plastic, it can be painted in any color. The preferred color is metallic blue. It has the deep blue, tiger-stripes asymmetrical body decals with white lines. The VS variant instead has the bodyshell molded in metallic blue.

The VS variant was equipped with the white, small diameter 6-spoke TZ-type wheels paired with the high profile slick tires. It doesn't comes with a standard motor.

In the manga and anime[edit | edit source]

Spoiler alert!

This section of the article may contains details concerning the progression of the plot. If you do not want it to be spoiled for you, skip this section!

Bakusou Kyoudai Let's & Go! MAX[edit | edit source]

In both media, the Diomars-Nero is a battle race machine that has the four-wheel-steering system that helps the car on cornering.

In the manga, it has the Borzonic system implemented and is capable of melting other cars' batteries upon ramming them from the sides. The head can also act as a helicopter rotor to allows the car to have stable landing. There's even a pair of boosters (the nozzles of the bodycatch) to accelerates even faster when used. Unfortunately, due to its high-tech nature, the Diomars-Nero soon become 'fatigue' during the WGP rookie race and eventually leds to its self-destruction by colliding against the fence when Nero have its booster activated despite Gouki and co.'s attempt to stop him.

In the anime, the Diomars-Nero was developed by Dr. Ogami and was given to Nero. It has a device that holds a rare MG Stone which was used to generates gravity. The MG device was later uses to create wider gravitational field that can destroys both the cars and the circuit. Unfortunately, the device puts a lot of stress onto the car when used, which was the main reason why Nero lose to the Ichimonji brothers during the M1 final.

There's also the Mass-produced Diomars (量産型ディオマース) in the anime which belongs to the Borzoi Teams who bursts into any on-going race tournaments (which includes the 2nd world grand prix) and destroys the machines left and right. They sports the car numbers on the body but lacks the MG Stones and MG devices.

Technical info[edit | edit source]

Variant Body Chassis Wheels Tires Motor Dimensions Gear

Display Model
(19306, 95586)

Color: Clear
Material: PS

Type: Display Model
Frame: Silver Plated, PS
A parts: Gun Metal Gray, PS

Size: Small
Type: Mecahnical (Nero)
Spoke: N/A
Fitment: Staggered
Color: Silver Plated
Material: PS

Size: Small
Type: Mechanical Treaded
Color: Black
Material: Med. Elastomer


(Search Mode)
(Terminate Mode)
Width: 78
Height: 40



Color: Metallic Blue
Silver Plated
Material: PS

Type: VS
Frame: Black, ABS
A parts: Black, ABS

Size: Small
Type: TZ Fully Cowled Type
Spoke: 6
Fitment: Staggered
Color: White
Material: Polypropylene

Size: Small
Type: High-Profile Slick
Color: Black
Material: Med. Elastomer


Length: 145
Width: 90
Height: 42


Gallery[edit | edit source]

Boxarts[edit | edit source]

External links[edit | edit source]

Tamiya Japan[edit | edit source]

Mini 4WD cars from Bakusou Kyoudai Let's & Go! franchise
TRF Victorys
Let's & Go! Magnum Saber · Sonic Saber · Tridagger X · Spin-Axe · Proto-Saber JB · Victory Magnum · Vanguard Sonic · Neo-Tridagger ZMC · Spin Cobra · Cyclone Magnum · Hurricane Sonic · Proto-Saber Evolution
WGP Beat-Magnum · Spin-Viper · Buster-Sonic
MAX Rising-Trigger · Lightning-Magnum · Blitzer-Sonic
My First Big BisonMagnum · RodeoSonic · Tridagger XX · Spin-Axe Mk.II
Return Racers! Great BlastSonic · Tridagger WX · Spin-Axe Zero · Proto-Saber Evolution Stage-3 · Great Magnum/Great Magnum Revolver · Cosmosonic
Ichimonji brothers
Max Breaker Z-2 · Shadow Breaker Z-3 · Knuckle Breaker Z-1 · Blazing-Max
Team Pegasus
Z Wing Magnum · Super Avante RS · Rowdy Bull · Wolfang · Mini 4WD Panda Racer · Infinity Mobius
Ogami Corps
Beak Spider · Brocken Gigant · Ray Stinger · Fire Stinger · Phoenix Stinger · Beak Stinger G · Haru 100
World Grand Prix Participants Buck Blader (America) · Savanna Zebra (Africa) · Beak Spider Zebra (Africa) · Diospada (Italy) · Kong Long (China) · Shining Scorpion (China) · Omega (Russia) · White Night (Norway) · Native Sun (Australia) · Jammin' RG (Jamaica) · Gun Bluster XTO (Peru) · Bergmasse (Germany) · Bergkaiser (Germany) · Chevalier de Rose (France) · Pyramidal Sphinx (Egypt) · Shining Dragon (China) · Vanishing-Gazer (America) · Desert-Golem (Egypt)
Borzoi School
Adean · P'keta · Phantom-Blade · Vise-Intruder · Diomars-Nero
From L&G Tsubasa Mini 4WD Lupine Racer (Super Animals) · Mini 4WD Hawk Racer (Super Animals) · Mini 4WD Cat Racer (Super Animals) · Mini 4WD Pig Racer (Super Animals) · Brocken Gigant Premium (G Muscles) · Aero Avante Black Special (Black Avante Team) · Gun Bluster XTO Premium (Team Gun Bluster) · White Armor G · Dark Armour G · Geo Glider · Hexagonite · Razorback · Manta Ray Mk.II White Special
The Phantom Thiefs Lord Guile · Baron Viento · Mach Frame · Copperfang
Others Manta Ray Jr. · Super Astute Jr. · Saber 600 · Avante 2001 Jr. · Black Saber · Fighter Magnum VFX · Super Avante · Wild Home Run · Flower-Axe · Dragon Delta · Red Sword · Blue Sword · Storm-Cruiser
Mechanical Mini 4WD series
1990 Spin Cobra · Proto-Saber Evolution · Buck Blader · Spin-Viper · Vise-Intruder · Diomars-Nero
Fully Cowled Mini 4WD series
Super-1 Magnum Saber* · Sonic Saber* · Tridagger X* · Black Saber · Spin-Axe · Proto-Saber JB · Victory Magnum* · Vanguard Sonic* · Beak Spider* · Neo-Tridagger ZMC · Fighter Magnum VFX* · Ray Stinger* · Shining Scorpion* · Bergkaiser*
Super-FM Brocken Gigant · Gun Bluster XTO*
Super TZ Cyclone Magnum* · Hurricane Sonic* · Cyclone Magnum TRF · Diospada* · Beat-Magnum* · Buster-Sonic* · Beat-Magnum TRF · Fire Stinger
VS Spin-Viper· Diomars-Nero
Super-II Spin Cobra
AR Z Wing Magnum · Great BlastSonic · Beak Stinger G · Proto-Saber Evolution· Tridagger WX
FM-A Great Magnum R · Cosmosonic
* denotes Premium version available; † denotes racing chassis re-release of a Mechanical Mini 4WD car
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