Famous Japanese Tuning Shops: The Stories Behind HKS, Mine’s, RE Amemiya, and Top Secret

Behind nearly every legendary JDM performance car that enthusiasts admire today sits a specialist tuning shop that helped define what that car could become. While Japan’s major automakers built the platforms, it was independent tuning houses, often founded by a single obsessive engineer working out of a small garage, that pushed those platforms to their limits and, in the process, built reputations that still carry enormous weight in the JDM world decades later.

HKS: The Turbocharging Pioneer

HKS holds a genuine claim to being one of Japan’s oldest and most influential aftermarket tuning companies. It was founded in October 1973 by Hiroyuki Hasegawa, a former Yamaha engineer, reportedly starting out of a small shed near the base of Mount Fuji. The company built its early reputation on turbocharging expertise at a time when forced induction was still a relatively niche pursuit in Japan’s performance car scene, and it has remained closely associated with turbo technology, ECU tuning, and exhaust systems ever since.

HKS is also known for genuinely extreme record-chasing builds rather than just catalog parts. One of the company’s most famous projects, a heavily modified R33 Skyline GT-R, was built specifically to chase quarter-mile and top-speed records, reportedly producing output in the range of 1,300 horsepower and setting a quarter-mile time that stood for years as one of the fastest recorded runs by an all-wheel-drive car at the time.

Mine’s: Precision Over Spectacle

Mine’s, founded in 1985 by Michizo Niikura and based in Yokosuka, Kanagawa Prefecture, built its reputation on a different philosophy than the record-chasing extremes associated with some other shops. The company first attracted attention in 1988 with the debut of its VX-ROM ECU module for the Nissan R31 Skyline GT-R, making it one of the first Japanese companies to sell reprogrammed engine control units for Japanese sports cars, at a time when ECU tuning was still a relatively unfamiliar concept to most street tuners.

Mine’s carried that engineering-first reputation forward through the R32, R33, and R34 generations of Skyline GT-R, and later into the R35 GT-R era. The shop is widely regarded within the Skyline community for building refined, exceptionally responsive cars rather than simply chasing the largest possible horsepower figure, with some enthusiasts considering certain Mine’s-built R34s among the best-executed street-spec Skylines ever produced.

RE Amemiya: The World’s Rotary Specialist

Founded in 1974 by Isami Amemiya and based in Tomisato, Chiba Prefecture, RE Amemiya has built an almost singular reputation: it is arguably the most recognized rotary engine tuning specialist in the world. The company’s name itself reflects this focus, with “RE” standing for rotary engine, and its work has centered overwhelmingly on Mazda’s rotary-powered cars, particularly the RX-7 across its several generations.

RE Amemiya’s credibility in the rotary tuning world is backed by genuine competitive results, not just reputation. Between 1999 and 2004, the shop’s time-attack-prepared FD3S RX-7 held the lap record at Tsukuba Circuit for front-engine, rear-drive, production-based cars, with a benchmark time set in 2003 that stood as a defining mark for serious rotary time-attack builds for years afterward.

Top Secret: Extreme Builds and a Signature Gold Finish

Top Secret, founded in 1991 by tuner Smoky Nagata, has built its reputation on a different approach entirely: extreme, headline-grabbing project cars rather than mainstream street parts catalogs. The shop became internationally known for a series of record-chasing and demonstration builds, including a widely discussed heavily modified Supra reportedly fitted with a V12 engine, a project that generated enormous attention within the tuning world for its sheer audacity as much as its outright performance.

One detail that has become closely associated with the Top Secret brand is Nagata’s habit of finishing his most significant project cars in a distinctive gold paint scheme, making Top Secret’s flagship builds instantly recognizable at car shows and in media coverage even to enthusiasts who might not immediately recognize the shop’s name.

Why These Shops Still Matter Today

What makes these four shops particularly significant is not just their individual histories but the fact that they collectively shaped how an entire generation of enthusiasts, both in Japan and internationally, came to understand what serious Japanese performance tuning looked like. Long before international audiences could easily order parts from Japan online, these companies’ reputations spread through car magazines, early internet forums, and eventually racing video games, turning shop names that started as small regional operations into globally recognized brands within the JDM enthusiast world.

Today, all four companies remain active in various forms, continuing to produce parts, compete, and in some cases build new demonstration vehicles, giving contemporary enthusiasts a rare continuous thread back to the earliest days of Japan’s aftermarket tuning scene.

Tokyo Auto Salon: The Stage Where Reputations Were Built

A significant part of how these shops built and maintained their reputations, both domestically and internationally, has been through Tokyo Auto Salon, Japan’s premier tuning and customization show held annually since the late 1980s. For decades, Tokyo Auto Salon has served as the venue where tuning houses unveil their most ambitious project cars each year, competing not just for sales but for prestige and media attention within the broader tuning community. A strong showing at Auto Salon, whether through a genuinely innovative new product or an eye-catching flagship build, has historically translated directly into brand recognition that could sustain a shop’s reputation for years.

This matters for understanding why these particular shops became so well known outside Japan as well: Auto Salon coverage in car magazines and, later, online media and video gave international enthusiasts a consistent yearly window into what Japan’s top tuning houses were building, long before it was practical for most overseas buyers to import parts directly.

How These Shops Reached an International Audience

Beyond Auto Salon coverage, several other channels helped push these Japanese tuning shop names into international enthusiast consciousness well before the internet made global parts ordering routine. Import-focused car magazines throughout the 1990s and 2000s regularly featured builds from these shops, often as aspirational cover cars. Racing and driving video games that modeled real aftermarket parts and brands, including officially licensed tuning parts from companies like HKS, introduced an entire generation of players to these brand names years before many of them could legally import or afford the cars those parts were designed for.

Specialist import and parts businesses that grew up around the JDM enthusiast scene in markets like the United States, the UK, and Australia also played a significant role, since sourcing genuine parts from established, reputable Japanese shops became an important selling point as the broader JDM import culture matured.

Frequently Asked Questions

Q: Which of these shops is the oldest?
A: HKS, founded in 1973, and RE Amemiya, founded in 1974, are the oldest of the four, having both been established in the mid-1970s, well before Mine’s (1985) or Top Secret (1991).

Q: What is RE Amemiya known for specifically?
A: RE Amemiya specializes almost exclusively in tuning Mazda’s rotary-powered cars, particularly the RX-7, and is widely regarded as one of the world’s foremost rotary engine tuning specialists.

Q: Why is Mine’s considered different from shops like Top Secret?
A: Mine’s built its reputation on precise, refined engineering, particularly ECU tuning and balanced power delivery for Nissan Skyline and GT-R models, rather than the extreme, record-chasing demonstration builds associated with shops like Top Secret.

Q: What is Top Secret’s signature style?
A: Top Secret, founded by Smoky Nagata, is known for extreme, attention-grabbing project cars and for finishing many of its most significant builds in a distinctive gold paint scheme.

Q: Are these tuning shops still operating today?
A: Yes, all four companies remain active in various capacities, continuing to produce aftermarket parts and, in some cases, build and showcase new project vehicles.

This article is for general informational purposes and reflects widely reported history about these tuning companies. Specific historic performance figures and records may vary between sources – always verify specific claims with official company materials before relying on them.

Image credit: Piston and Conn-rod for NISSAN VQ35DE by HKS by 160SX, CC BY-SA 3.0, via Wikimedia Commons