'''''Bakusō Kyōdai Let's & Go!!''''' (The Racing Brothers! Let's & Go!!) is a 1991 manga and anime series produced by Tetsuhiro Koshita in order to promote Tamiya's mini 4WD toyline. A SpiritualSuccessor of ''Manga/DashYonkuro''. It did not get an export to America or being very well known compared to other series, but ''Let's & Go!!'' was a responsible for mini-4WD trend in several contries in Europe and Asia, including Indonesia, Philippines, Italy, China, and Thailand. The story lasts four seasons: ''Let's & Go!'', ''WGP'', and ''MAX'', which is a sequel to the second season featuring new protagonists and story, and ''Return Racers!'', which returned the protagonists to Seiba brothers, but in their twenties/thirties. ''Bakusō Kyōdai Let's & Go!!'' remains a CultClassic for many people.

The stories follows the mini-4WD racer siblings, Retsu and Go Seiba, [[RedOniBlueOni who are different as day and night]], receive a couple of [[SuperPrototype prototype racing machines]], ''Sonic Saber'' and ''Magnum Saber'', by the mini-4WD recearcher Professor Tsuchiya, under a condition that they will enter and win a series of mini-4WD national competition, the seasonal Great Japan Cup, but things appear to get worse when Prof. Tsuchiya's rival, Prof. Ohgami, a researcher who believe in the idea that racing is to destroy other cars, arrived in the scene. He sent his representatives to bring chaos into mini 4WD racing society by turning them into battle races. Retsu and Go, along with friends and rivals they meet along their racing careers, struggle against the new trend of vicious racing to prove that the true mini-4WD racing should be the way it used to be.

The second season, ''WGP'', is a direct sequel where The Seiba siblings and their friends are elected into a first international mini-4WD Grand Prix in Japan. The Japan's reprentative, the TRF Victorys, led by Retsu Seiba, enter the grand prix and meet many competitors from around the world.

The final season, ''MAX'', follows Gouki Ichimonji, a student of Borzoi racing school, where for the students, mini 4WD racing is to battle and destroy each other. Gouki gets sacked for not using his machine, Max Breaker, for battle racing. Gouki leaves the school and his younger brother Retsuya behind and stays with his uncle. In Gouki's racing career as, he meets Marina, a mysterious and serious girl who owns a vicious racing machine, Fire Stinger. The story follows the journey of Gouki, Retsuya, Marina to have a triumph over Borzoi academy and their immoral ways of racing.

A new manga series, ''Return Racers'', began publication in 2014 to celebrate the 20th anniversary of the series; it returns to the Seiba brothers, but set twenty years after the original series.
!The series contains examples of:

* AbsurdlySharpBlade: Beak Spider. Its RazorWind blade cleanly cuts through soda cans and trees.
* AccidentalMisnaming; A typical exchange between Gouki and Marina
--> Marina: My name is Marina! [[PunctuatedForEmphasis Ma-ri-na!]]
--> Gouki: I got that already, Mariko.
* AesopAmnesia: [[spoiler: Gen realizes he can win without using a battle part, but he's back to his AxCrazy personality in the very next episode.]]
* AdultsAreUseless: Zigzagged. Fighter, Dr. Tsuchiya, and other shown parents are very competent and outspoken about how Mini-4WD racing hobbying invoke children's creativity and social interactions. However, the rest of them seem to be either unaware or perfectly okay with their children breaking rules, playing with weapons, roleplaying gangsters, and destroy other people's propeties for ''fun''.
* AnimationBump: The quality of the animation is... inconsistent, to say the least.
* AnnoyingYoungerSibling: Go Seiba, Jiromaru Takaba, Chiko Mikuni.
* [[AntiHero Anti Heroine]]: Marina.
* AwesomeButImpractical: Cyclone Magnum, as it requires a running time to build up downforce and speed. It gets better.
* BloodSplatteredInnocents: Not blood, but battery lead. This happens when [[spoiler: Carlo's Dio-Sparda illegally destroys Brett's Buck Blader during a race, with Go witnessing the deed.]]
* ButtMonkey: Tokichi. The catch is, he actually ''looks and sounds'' like a monkey.
* [[CallMyName Call Your Car's Name]]: UpToEleven with Go.
* CallingYourAttacks: ''MAGNUUUM TORNAAAAAADOOO!''
* CarFu: Most cars made by Ogami and Borzoi academy. Diospada also has knives hidden in its front body. During the start of the series, Futoshi Kurosawa's Black Saber also have a roller that could cut tires of opponent cars.
* ChaseScene: The whole ''Bousou Mini Yonku Daitsuiseki'' movie is one big chase scene, with the cast trying to stop the berserk Gun Bluster XTO from running away.
* CheatersNeverProsper: Kurosawa ''always'' ends up badly when he's cheating.
* [[EmpathicWeapon Empathic Racing Cars]]: They certainly don't communicate, but while the GP Chip handwaves the trope in the second season, the cars do act according to their owners.
** The advanced GP Chip planted within [[TheMovie Gun Bluster XTO]] has a mind of its own. The car goes berserk and runs away from Reon as it gets frustrated when Team XTO Revolvers is being disbanded.
* CrapsaccharineWorld: What happens when the typical toy combat tropes are viewed as invading forces that get decontructed.
* CombiningMecha: Phantom Blade and Vice Intruder can merge together in ''MAX'', which [[YourSizeMayVary somehow also enlarges them.]]
* CoolCar
* CoolOldGuy: Tetshin-sensei
* DefeatMeansFriendship
* DaddysGirl: Marina.
* DownToTheLastPlay: Gouki and Retsuya usually end up in a tie even with a photo shoot.
* DubNameChange: Philipines and Italian dubs
* [[EmotionlessGirl Emotionless Boy]]: J, before HeelFaceTurn.
* FunWithAcronyms: TRF Victorys - '''T'''suchiya '''R'''acing '''F'''actory Victorys.
* HeelFaceTurn: J, Kurosawa, Retsuya
** Kai Okita in the second season.
* HeroicBSOD: [[spoiler: When the Sabers and Victory Magnum are destroyed.]]
* IdiotHero: Go and Gouki.
* InstantFlightJustAddSpinning: Magnum Tornado, applying a concept from a fast ball pitching in baseball, Magnum can, with an aid from a wind flow, [[FlyingCar temporary swirl mid-air at high speed.]]
* JerkWithAHeartOfGold: Go
* LargeHamAnnouncer: Fighter. He gets a woman for it.
* MerchandiseDriven: Tamiya's, of course. Its logo and products are everywhere.
* MoodWhiplash: Many angsty moments are cut short and turned into something funny when the angsters accidentally mess themselves up.
* MidSeasonUpgrade: So many. Considering the company trying to sell their products, it's understandable.
* MsFanService: Marina, given her choice of clothing and her {{Woobie}} personality.
** Jun Sagami is infamous for being a {{lolicon}} bait.
* NationalStereotypes: ''WGP'' is on par with ''Anime/MobileFighterGGundam'' when it comes to stereotyping foreigners, especially since the Japaneses seem to be the only people to have any significant variety among themselves.
* NitroBoost: Buck Blader's Power Booster.
* [[CombatCommentator Racing Commentator]]: Fighter, and Prof. Tsuchiya for racing analysis.
* PlayingWithFire: Fire/Phoenix Stinger
* RollerbladeGood: In ''WGP'', most characters glide on Rollar skates instead of running.
* SeriousBusiness: Ohgami definately wants this to happen in the racing society, but the heroes are rejecting the idea, and they won't mind spending time racing for ''[[SubvertedTrope fun]]'' in the filler episodes.
* SiblingRivalry
* SiblingYinYang
* SpannerInTheWorks: Chiko, messing up her brother's plans ''twice'', with the second time being a serious matter [[spoiler:as Kai's trying to take over Mikuni game center.)]]
* StalkerWithACrush: Chiko, on Retsu.
* RedOniBlueOni: Strange enough, Go, the hotblooded younger brother, has a blue motif, while Retsu, the level-headed, older brother, is red.
* RunningGag: Whenver Go's teacher, Manami, enters a free race, there will be a track that leads into a male toilet.
* SpoiledBrat: Tokichi firstly appears a rich and spoiled kid, [[CharacterDevelopment though he gets better.]]
* SuperPrototype: The Sabers, V Machines, and Proto Saber JB.
* TerribleTrio: Prof. Ohgami's students; Kai (super ego), Gen (id), and Rei (ego)
* TroubledButCute: J
* SpotlightStealingSquad: Go, the story starts off with the sibling being equally focused, but after Go has created his Cyclone Magnum, he pretty much steals half of the show.
* {{Tomboy}}: Jun, Minami
* UnderdogsNeverLose, played with in ''WGP''. TRF Victorys doesn't win everything, but whenever a team member has a personal problem and runs dead last in a race, it's very likely that he will be the one who wins the race or at least help the team winning it. [[MidSeasonUpgrade Unless he needs an upgrade badly.]]
* WidgetSeries: Some filler episodes are plain weird, like episode 22 of ''WGP'', where teachers and students race their minicars around the town [[ItMakesSenseInContext tying bowls of soup and dried squid on their cars while avoiding cats and landmines.]]
* VillainProtagonist: Retsuya, before his HeelFaceTurn.