JB74 Jimny Supercharger: Unleash the Full Potential of Your Jimny
It’s no secret, we love the Suzuki Jimny: An incredible ability to navigate both through off-road terrain and the tightest city streets, retro styling that pays homage to its first coil sprung predecessor—while also including the creature comforts of a much more modern vehicle—and a wide array of aftermarket accessories and upgrades that only comes about when a car creates a community. It is however known in this community that the Jimny does lack one quite important thing.
Power.
It’s not the slowest car on the road but that’s only because its previous model, the JB43 Jimny, is still around. The JB43’s solution however, is simply swapping the motor out for one of a larger capacity which, at the time, came out in various other Suzuki vehicles. The JB74 lacks this luxury of motor swapping.
You can remedy the JB74’s sluggishness with the simple installation of a throttle controller and sport exhaust system. These upgrades do increase the overall responsiveness of the vehicle, yet there is still much left to be desired; especially when putting additional weight on poor Jim with the likes of bullbars, loaded draws and big wheels.
The solution to this power problem can be solved with one word: Supercharger.
It has been our experience that Harrop’s latest supercharger kit for the JB74 Jimny is the be-all and end-all when it comes to boosting in OE style; no exposed pod filter and no blue silicone intercooler hoses.
THE K15B
Reliable Workhorse yet Lacking Horsepower
This is not the first time Suzuki’s K series has appeared in a Jimny. The turbocharged K6A motor has been in JDM Jimny’s since the 90s. Suzuki however, dropped the K6A from the latest generation, but the K series still lives on through the four-cylinder K15, the power plant of all JB74 models – shame they didn’t turbocharge this one too.
From factory the JB74’s K15B motor produces at the flywheel 75kW power and 130Nm torque. Now, these figures are an improvement over the JB43’s M13A motor, yet in actual fact they’re not that different from Suzuki’s M15A motor and as mentioned before, motor swapping the JB43 is an easy feat.
So while boosting Jimny’s was somewhat a niche before, it definitely has become the way to go for achieving those big power gains — with a whole variety of different kits readily available not long after the new JB74 arrived on the market.
With so many kits to choose from, the question now is; why choose Harrop’s TVS900 over all the others?
HARROP’S SUPERCHARGER FEATURES
The Supercharger Kit – What’s Actually Included?
The Harrop TVS900 supercharger kit isn’t some cobbled together kit to boost your Jimny. Harrop Engineering has been around since the 1960s in the motorsport engineering game right here in Australia.
The supercharger kit was designed to OE standards and is a direct bolt-on replacement for the intake manifold. The kit has also been designed with accessories in mind so that you don’t lose out when wanting to install bullbars and snorkels (favourites of us 4×4 enthusiasts) so that you can have the best of everything.
KEY FEATURES
There is no piggy-back chip in this installation. You send Harrop your ECU, they unlock and reflash it, and you’re good to go! Any issues with the kit? No need to worry as it is warranted for 36 months by Harrop.
Supercharger Kit TVS900
Harrop Supercharger TVS900 - Suzuki Jimny A6G415 GJB74V 1.5L K15B 2019 ~
PERFORMANCE SPECS
Supercharged Gains
So what does all of that mean in the end? It means after installation is complete, you can expect to be seeing figures like these on the dyno:
100kW / 149Nm Supercharged measured at the hubs
Which when compared to it figures at stock:
63kW / 107Nm Stock (auto) measured at the hubs
That’s an increase in power over stock by 59% and an increase in torque of 42%
That’s all supercharger: no exhaust, no extractors and no cold air induction. While the dyno figures are impressive — it’s how the supercharged toaster drives. No more putting your foot flat on the throttle to only inch forward, now there’s power right off the mark, even while already rolling on the highway — sure makes those road-train overtakes a whole lot less scary on those single lane roads. You’ll notice the difference from the very first drive – and so will your mates trying to keep up.
Gains with an Exhaust System
If you’ve gotten this far then you may be considering the Supercharger, and if that’s the case we need to tell you a few more numbers. A lot of Jimny-lovers have done mods to their car including exhaust and if you already have an exhaust then you can expect to see numbers looking a little more like this.
MIDLAND WORKSHOP
Installed In-House by 4WD Experts
Here at 4WD Partshop we don’t just sell these kits, we install them also, the first to do so in WA! Yes we install it, test it, and we certainly back it. Why? Because the boss was so impressed, he got one too in our very own Jimny, Bazooki, which he has been daily-driving and loving since.
Is it worth it?
Absolutely this kit is worth it! It completely transforms your mild-mannered Jimny into Super Jim!
Now this kit will set you back, $10,990.00 to be exact, and that can be a lot to part with for a lot of us. Yet if you’re this far into upgrading your Jimny and you’re weighing your options on boosting already, trust us, this is the way to go.
Instant torque, smoother power delivery, and true OE-level integration, the Harrop TVS900 turns the Jimny into the capable all-rounder it was meant to be.
If you’re serious about getting more out of your Jimny — whether it’s for off-roading, those long weekend road trips, or even to make the daily drive that much more fun — Harrop’s TVS900 kit is the most effective upgrade you can make, dare I say, even more effective then a suspension lift, some big wheels and a set of reduction gears. Combine all of these upgrades together however and you’ll be hearing “Yes Chef!” because now you’re cooking!
- Confidence off-road: Crawl, climb, and conquer without second-guessing.
- Better drivability: Less gear-hunting, more response, even with any added weight.
- Tested and trusted: Installed and proven in our own shop Jimny.
We’ve done it ourselves, and we can help you do it right. And if you’re still not sold, Brian will take you for a joy ride that will have you smiling ear to ear – we guarantee it.
Final Thoughts from 4WD Partshop
We’ve seen a lot of upgrades over the years—but this one’s different. The Harrop TVS900 doesn’t just give the Jimny a performance bump, it completely transforms how it drives.
It feels more capable. More responsive. More exciting every time you hit the road.
More than just a performance upgrade, installing a supercharger is a commitment to the Jimny lifestyle — one defined by versatility, capability, and adventure. It’s about embracing the freedom to go further, tackle tougher terrain, and explore without compromise. This is the essence of what makes the Jimny so special, and with the Harrop TVS900, you’re unlocking its full potential, to lead the zook lifestyle with endless fun and possibilities.If you’re ready to go supercharged or have any questions, give us a call at 4WD Partshop or swing by the shop to chat about your build. We’ll walk you through everything you need to know, from compatibility to installation timeline — and get your JB74 ready to go supercharged.
Check out our Video on the Supercharger below and more on our Youtube Channel here.