Kyuu-Gentsuki Buying Guide!!

EVERY CORRECT BASE — THE FULL AND ONLY DEFINITIVE LIST

With scooter prices rising, many people, myself included, have started looking into importing bases from Japan. However, there’s very little information available, in either English or Japanese, on this specific style of late-80s kyuu-gentsuki. By going through piles of magazines from 1987–1993, we’ve compiled a list of every base that was commonly modified in this style.

That said, not every scooter on this list will automatically suit your personal build style or make a good first project. These bases are ranked into tiers, with each tier increasing in difficulty when it comes to building the scooter to period-correct specifications. If you’re in North America and looking for easily accessible bases or recommendations for a first build, Gentsuki House has a solid breakdown of all North American models. While GH only scratches the surface, this guide aims to document every base that truly fits within this style. If it’s not on this list, it simply doesn’t fit. Period.

Tier 1 — Common Bases:

The scooters in this tier are among the most common and widely used bases. In Japan, they make up around 90% of the builds seen at touring events, and in North America, they account for nearly all builds you will ever run into. These models have excellent aftermarket support, with easily accessible aero kits available through shops like 3Peace or sellers on Yahoo Auctions at any time. If you're looking for a solid starting point, we highly recommend choosing one of these bases. They have readily available parts, well-documented guides on sites like Minkara, and community support, making them the best for first-time builders and OG builders alike. They are the best for a reason...
We cannot stress this enough. Your first build should be from a tier-one base!

Honda Super Tact (AF09)

One of the most recognizable bases in the Kyuu Gentsuki modification scene, the Honda Super Tact is known for its untuneable but dependable AF05E engine, lightweight feel, and rider-friendly features like auto start, oil lights, and fuel level indicators. With clean lines, appealing curves, and panels that find a balance between simplicity and detail, its rounded yet boxy design gives it the ideal 80s appearance. Later on, builders would cut intricate duct and vent work into them. It was one of the most fashionable scooters of its time thanks to small details and a range of trims, including the popular Courrèges edition with its two-tone colorways, special seat, and matching clusters. The chassis is suitable for nearly any style, ranging from slammed, vented, ketsuage, and even a clean OEM+ setup. Parts are readily available, and online guides make mods simple to follow. Because of its visual adaptability, you can make it aggressive, sleek, or cute without sacrificing the timeless appeal this base provides. It is still one of the most well-liked options for builders of all skill levels because it is a dependable, adaptable platform.
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View full AF09 Tact guide here

Honda DJ-1 / DJ-1R / DJ-1RR (AF12 / AF19)

The Honda DJ-1 is a common base in the scene thanks to its compact, sport-inspired design and lightweight build. Its aerodynamic body and "Dolphin Jump Line" styling, as opposed to more traditional scooters, give it a sleek, youthful appearance that attracted teens in the late 1980s and early 1990s. From the standard DJ-1 with 8-inch wheels to the DJ-1R and DJ-1RR, which introduced Cool Iron and Shuriken wheels, chambered exhausts, undercowls, and clear-lens signals for a more tuned styling. Although the streamlined shape limits significant body modification, its panels are simple and clean, allowing for small cutouts and vents to be added where needed. Whether you're going for a sport livery tuning machine, a period-correct lowered setup, or subtle OEM+ enhancements, the DJ-1 works well with a variety of build styles. Anyone can hop into the DJ1 as a project because parts are reasonably priced and it is interchangeable with many Tact components. The DJ1 is definently a solid base for anyone searching for a small, agile platform with distinctive 80s character due to its unique look, racing-inspired details, and versatility.

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View full DJ1 Tact guide here

Honda Dio 1 (AF18, AF25)

The Dio appeared in 1988 with a more aerodynamic, forward-looking design that stood out at the time, quickly becoming a favorite for teens in the early 1990s. Its sporty shape and smooth panel layout make it easy to adapt to almost any style, whether you prefer clean painted panels, a lowered front end with the 10-inch tri-spoke tucked tight to the fairing, or a full aero setup with a large wing and Takeyari pipe. The Dio 1 is a flexible Honda platform thanks to its wide range of stock two-tone colors, multiple trim variations, and the huge amount of aftermarket support it gained over the years. Parts are easy to find, wheel swaps are common, and tuning or engine upgrades are everywhere, making maintenance and modifications straightforward. With its mix of style, simplicity, and adaptability, the Dio 1 sits at the top of the list for builders who want a sporty, responsive chassis with a classic late-80s look.
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View full Dio guide here

Honda Dio 2 (AF27, AF28)

The Honda Dio 2, also known as the Super Dio, pushed the platform into a more modern 90s look with its rounder panels, taller stance, and updated proportions. This second generation kept the sporty feel of the original Dio but came with a slightly larger frame and Honda’s strongest 49cc engine, the AF18E. Compared to the sharper 80s bases, its smooth, rounded bodywork gives it a softer and newer look, but once it’s lowered, the wheel-to-fender fitment becomes one of its best visual traits in my opinion. The Dio 2 works well for clean builds that stick to simple aero parts, calm paint, minimal to no vents, and an overall clean scooter. With this base having so many factory trims, Dio R, S, SP, SR, and ZX. Parts are easy to find, both OEM and aftermarket, and usually pretty cheap, making it a budget-friendly platform. Its wider stock wheels and optional disc brake also give it a nice handling advantage. Overall, the Dio 2 is a solid choice for anyone who wants something a bit newer-feeling while still keeping that classic early-90s Honda style.

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View full Dio 2 guide here

Honda Squash (AB11)

The Honda Squash is one of the most unique bases from the early 80s. Its tiny size, 8-inch wheels, and compact shape make it stand out instantly. It looks visually different from anything else in this era, and that small size is its main selling point. Most builds stay pretty simple, with a clean seat, clear lenses, a cowl, paint, and maybe a few cutouts on the front fender, since that’s the only real panel space it has. Honda shared a lot of parts during this time, so some builders run DJ1 8-inch wheels, engine swaps, or a DJ1RR-style chamber to give it more power and help it keep up with other scooters. The Squash came in some fun colors, with the bright pink model being the fan favorite, along with the Deluxe red, white and yellow options. It’s extremely light, eye-catching, and gets more attention stock than many fully built scooters. The downside is that it’s a tad slow in stock form and can feel cramped for taller riders. Overall, the Squash is a great base if you fit on it! small, rare, and genuinely fun to style.
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View full Squash Tact guide here

Yamaha Jog 1 (27V)

The Yamaha Jog 27V, often called the Pelican Jog, stands out immediately with its beak-like front panel, slim body, and sharp lines. Its small, light frame gives it a clean, cute look that can be styled in almost any direction. The 27V is an amazing base because it works well with a variety of setups. Stock 10-inch thin-spoke wheels give it a unique stance, while 8-inch Mint wheels or mixed-size combinations make the proportions feel more balanced and visually appealing. The panels are simple but sharp, so they work well for aggressive venting, so the bodylines of vents and panels don’t clash. Chambers and cowls are easy to find, and with a nice two-tone paint job, you already have a perfect build. The Jog’s distinctive shape and versatile panels make it a simple scooter that looks great, whether you’re aiming for an extremely low stance, a racing-inspired setup, or a clean, traditional two-tone look. Its unique nose, clean silhouette, and overall shape give it a timeless appeal, meaning even lightly modified or fully personalized builds always get noticed.

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View full Jog guide here

Yamaha Jog 2 (2JA)

The Yamaha Jog 2, also known as the New Jog, gave the classic small city scooter a fresh look with softer yet still sharp lines, more aggressive OEM vent styling, and a slightly more modern, sporty shape. The angled front panel hits the perfect balance between the original Jog and the later Jog 3, paying tribute to the original while giving the 2JA its own identity as a nimble, sport-driven scooter. The stock 10-inch wheels provide a balanced stance without the need for an 8-inch swap. Cowls, wings, and vents sit naturally on the panels for a clean early-90s, period-correct aesthetic. Repaints usually stick to classic two-tone schemes, either splitting the inner and outer panels or matching the undercowl and trim to the main two-tone, but all-white and all-black builds are also common. The 2JA chassis is light, strong, and versatile, making it an excellent base for clean, stylish builds that experiment with vents, cowls, or subtle personal touches without losing the classic 90s Jog character.
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View full Jog 2 guide here

 Yamaha Passol (2E9)

The Yamaha Passol is one of the most unique and easy-to-recognize scooters from the late 70s. Its small 2E9 chassis, thin, compact frame, and delicate proportions give it a clean, elegant shape that is different from most 50cc scooters in this list. The square headlight, slim fender, skinny side panels, and built-in handlebars give the bike a simple but classy look that works well with builds that are subtle and stylish. The Passol is the perfect size for classic two-tone repaints, tasteful cowls and wings, or wrapped seats without feeling crowded. Most builders don't make big changes; instead, they add small, period-appropriate details like clear lenses, small flagpoles, chambered exhaust and floor mats out of grass. Only the front pannel can hold small vents or personal touches, which makes simple builds look polished and planned. The proportions stay the same whether the suspension is stock or slightly changed, so it's easy to style. The Passol is a scooter that looks great as a clean, fashionable canvas with its fun colors, small frame, and classic lines. It's not a performance-focused project.

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View full Passol guide here

Yamaha Passola (2T4)

The Yamaha Passola, introduced in 1978, took everything that made the Passol charming and made it just slightly bigger and more refined. The larger frame and fuller front panel make it look neat and solid while still keeping the "cute scooter" vibe. The clean, uninterrupted panels hide the mechanics well, and the shape of the step-through makes it instantly recognizable. The Passola had an automatic starter, which made it a little more convenient without changing the overall look. The previously Passol did not have this feature. Styling the Passola is a lot like styling the Passol: simple, clean, and time-appropriate builds look best. A tasteful two-tone paint job, a chambered exhaust, a wrapped seat, or a small flagpole are all small changes that make the scooter look better without changing its shape. It has a little more presence on the road because as its a little bigger, but it is still small enough to feel light and like a true 50cc. Because the Passol is uncommon, it's a little harder to find parts for it. However, this also makes it a unique base for anyone who wants something different. The Passola is great for builders who like classic design, clean lines, and understated charm.
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View full Passola guide here

Tier 2 — A Little Unique:

This is where things start to get harder. While aero parts do exist for some bases in this tier, each comes with its own quirks and limitations. These scooters can still be built in a traditional style, and there is enough inspiration online to reference period-correct builds.

That said, wheel swaps, replacement parts, and clear step-by-step guides are far less common. Fitment is not always straightforward, documentation is limited, and there is no guarantee that parts will simply bolt on. At this point, no one will be holding your hand.

Yamaha Champ (54V/2GM/2NA)

The Yamaha Champ debuted in the mid 80s and has a very unique design from Yamaha. The front panel shares a lot of similarities with the 2JA Jog, but the ductwork is smoothed over. The turn signals are built into the front panel instead of the headset, matching what the brochure calls “a more masculine headset and handlebars.” From factory it runs a staggered wheel setup with an 8-inch front and a 10-inch rear. It looks a bit odd at first, but this layout hints at Yamaha’s goal when building it. The standard Champ works fine as a quick commuter, but Yamaha also released the Champ 80 and Champ RS. The Champ 80 is still a 49cc two-stroke, just tuned a bit stronger, and comes with larger drum brakes, a gas-filled rear shock, and Ceriani-type forks. The Champ RS is the real performance model. It came with track-style graphics, matching 10-inch wheels, a performance muffler similar to the DJ1R chamber, and an OEM undercowl with two great-looking vents. The RS is the most desirable version, but the base model has its own charm. The 8-inch front and 10-inch rear setup gives it a look that’s different from anything else, and personally I think that’s what makes the Champ so interesting.
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Yamaha Mint (1YU)

The Yamaha Mint has gotten mixed reactions over the years, but it was designed with a clear purpose. It was built to be cute and was heavily marketed toward women, coming in over ten colors and around fourteen variants, most in soft pastels like pink, blue, and yellow. Since it wasn’t meant to be fast or competitive, its charm comes from the details: matching 8-inch wheels, a tiny front fender, and an optional front cubby. In late-80s magazines, you’ll always find the Mint in the “Gals” section, usually kept stock height with hand-cut decals of whatever band or show was popular at the time.

Today you can build the Mint like any scooter, and shops like K-Style even make fiberglass parts for it. The biggest drawback, though, is the transmission. It’s non-variated and uses a chain drive instead of a belt, which sounds interesting but has proven slow and unreliable over time. There’s no real way to tune it or increase speed like other scooters, so it tends to be one of the slowest during tourings. If the chain snaps, it will damage the entire engine. Most Mint enjoyers swap in a 27V Jog engine, but it requires welding, wiring, and a lot of extra work. Overall, the Mint is great for looks and style, but it has clear limitations if performance is the goal.

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Yamaha Passol 2 (2E9)

The Yamaha Passol 2 came out in the early 80s, though at a glance it looks more like something from the late 80s or early 90s. It was introduced as another beginner-friendly daily commuter, keeping much of the rear-end styling from the original Passol and Passola. The most noticeable change is the sharp, transparent front panel, which feels like Yamaha’s attempt at a more modern take on the classic Passol design. Build examples and ideas for the Passol 2 are a bit rare online, but they do exist, and they tend to be well done. A lot of its following comes from older riders who grew up with the earlier Passol models, so when someone builds one, it usually looks clean and thoughtful. Aero is harder to source, but a few manufacturers made parts in the 90s, with G-Style being the most recognizable. Stock, the Passol 2 already has a neat look, but personally I think it looks even better on 8-inch wheels instead of the OEM 10s.
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Suzuki Hi / Hi-R (CA19A, CA19B(R))

The Suzuki Hi is finally our first Suzuki on this list. Because of the common CDI failures in the 90s, many of these scooters were scrapped, so finding a clean one today is rare. This base has a soft spot in my heart. The Hi is peak Suzuki. It was built to be light, handle well in stock form, and stand out with colorways even more vibrant than the Mint. It was never made to sit extremely low like a Tact or Dio, and it wasn’t designed for straight-line speed. Instead, it has extremely round styling, matching 10-inch wheels, and a slightly larger rear tire that gives it a unique stance. Stock, it already looks great.

Suzuki also released the Hi-R, the performance version. This model was built to corner and stay nimble, with an “anti nose dive” system, dual front suspension, a nose cowl, a factory undercowl, and a rear wing mounted just under the seat. It earned the nickname Hi Hyper Runner for a reason.

What draws me to the Hi more than anything is Suzuki’s ability to combine sharp bodylines with soft, rounded arches. The tail light narrows to a point while the rear panels sweep upward far past the wheel well. Even the option to buy it with or without a front fender feels like a bold design choice. Whatever Suzuki was smoking in the 80s, I want some...

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Suzuki Carna (CA18A, CA18B(F-3))

The Suzuki Carna is a base I don’t know incredibly well, but I’ll share what I can. Much like the Hi, Suzuki built the Carna as a sporty 50cc platform, but this one is much straighter and boxier in design. It was made to be light, quick, and responsive, with more focus on performance than daily commuting. One of its most notable trims is the Carna F-3, which pushed the sporty theme even further. It featured a collaboration with racer Satoshi Tsujimoto and came with Yoshimura-inspired graphics. The F-3’s red and white livery is one of the cleanest factory designs from Suzuki in my opinion. Because the Carna leaned more toward performance and less toward casual riding, it didn’t end up in the hands of teenagers as often. That’s why there aren’t many extreme magazine builds with vents, ducts, or heavy styling floating around. Most examples stay close to stock height or run a simple lowered stance. The Carna already looks sharp from factory, and even with minimal changes it stays a solid, sporty base.
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Honda Eve Pax (AF14)

The Honda Eve Pax debuted in the mid-80s and occupies a strange spot in Honda’s lineup. It isn’t a performance-focused base like the DJ-1, nor a clean identity like the Dio. Instead, it was designed to be simple, affordable to operate, and appealing to casual riders and women looking for an easy city scooter.

Styling-wise, the Eve Pax shares the soft, rounded bodywork of other Eve models, though the Pax has a slightly squared-off front cowl and a relaxed, upright stance. Its most notable trait is its boxy side, evey line on the scooter is sharp, which if your doing vents is perfect. Shorter and lighter than a Tact, it’s fun to toss around.

The Eve Pax works best clean, at stock ride height, in pastel colors, with small and subtle decals. Trying to push it into a DJ-1 or Dio-style build usually looks off. It’s a quirky base I’ve never fully understood, but there’s a charm in how small, polite, and understated it feels.

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Honda Stand-Up Tact (AF24)

The Stand-Up Tact is one of Honda’s more unusual ideas from the late 80s and early 90s. Since it doesn’t appear in any of my dealer pamphlets, I only have limited knowledge, but it seems the AF24 shares the same commuter-friendly DNA as other Tacts. Honda added an automatic kickstand system, which is the main reason this model exists. With the press of a button, the scooter lifts itself onto the stand, marketed at the time as a convenience for riders who didn’t want to wrestle with a center stand. Outside of that gimmick, the styling follows much of the Honda Pal but is just a tad more sporty. Out of all the Tact variants, this might be the one that feels the most novelty-focused. It’s not bad, just very specific. If you want the classic bubbly dolphin-nose look, it works fine, but if you’re looking for something to build aggressively, there are far better Honda bases than this. On the plus side, the k-style under cowls available for it make the Stand-Up Tact feel 1000 times better than stock.
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Tier 3 — Very Uncommon:

This is where builds stop being straightforward and start becoming work. While every base in this tier has been built before (examples are provided), doing so is rarely simple or efficient. If you are new to scooters, you should not start here.

You will not find much inspiration for these builds online. Period-correct examples are scarce, and modern references are limited. In most cases, you will need to rely on magazine scans and archival material rather than social media or build threads (see the archive on Instagram and on the site here). As a result, inspiration often has to be pulled from other bases and adapted from rare, period-correct examples.

Expect to fabricate or modify your own fiberglass parts, cut and weld exhausts to make them fit, and solve all wheel swaps and panel compatibility issues yourself. There are no guides, no reliable templates, and no guaranteed solutions.

Parts are often expensive, difficult to source, and may require months of searching. Even when parts do exist, they are rarely designed for your specific base. These scooters can be built, but they demand significantly more time, money, and problem-solving than Tier One or Tier Two.