Now ND2 compatible!
The HKS GT2 system has been our pick for all-around robust forced induction on the ND MX-5 chassis. We've pioneered forced induction on the ND going all the way back to 2016. The ND is nearly perfect — but it's underpowered for the era we live in. Lightness is always a win, but horsepower and lightness is why we fell in love with the Miata.
Dyno-proven results
With our in-house Fab9 calibration on 93 octane and M-Cal V2 injectors, the standard pulley delivers around 245–250 whp on the ND2 (about 225 whp on the ND1). Step up to the smaller 80mm pulley and output climbs past 275 whp — our shop ND2 put down 272 whp and 220 ft-lbs. Here is a typical power curve on an ND2:
What's in the kit
HKS part number 12001-KZ001. The Pro Kit is a complete bolt-on system: GT2-7040L centrifugal supercharger assembly, supercharger traction kit (oil plus oil cooler), installation bracket, full intake system with a closed airbox (heat and sound insulated), bypass valve, front-mount intercooler with all piping, HKS spark plugs, and the washer tank relocation kit. Everything mechanical is in the box — engine management is the one thing it doesn't include, which is exactly why we write the tune in-house.
What your car needs
- ECU tuning (required): ND1 uses EcuTek; ND2 and ND3 require VersaTune. We develop the calibration here at Fab9 for both platforms.
- Injectors: the ND1 keeps its factory injectors. ND2 and ND3 need M-Cal V2 injectors to match the added airflow.
- Battery: the supercharger drive occupies the battery's factory location. A few customers have relocated the stock battery on their own, but our LiPo4 smart battery system is the clean, purpose-built solution.
- Fuel: 93 octane recommended; 91 octane minimum.
- Transmission: fits manual and automatic — we install them on both regularly.
Emissions note: this system is not CARB certified, but it installs without disturbing your factory emissions components.
Frequently asked questions
How much power will the HKS GT2 kit make on my ND2?
With our Fab9 calibration on 93 octane and M-Cal V2 injectors, expect around 245–250 whp on the standard pulley. The smaller 80mm pulley takes it past 275 whp — our shop ND2 laid down 272 whp and 220 ft-lbs.
What tuning does the kit need?
ND1 cars use EcuTek; ND2 and ND3 require VersaTune. Either way, the calibration is written in-house here at Fab9.
Do I need bigger injectors?
On the ND1, no — the factory injectors stay. ND2 and ND3 need M-Cal V2 injectors to keep up with the boosted airflow.
Does it work with an automatic transmission?
Yes. We install this kit on automatics and manuals alike, on the regular.
Is it CARB legal?
No — the system isn't CARB certified. It does install without touching your emissions components, though.
How long does installation take?
About 8 hours here in our shop. Doing it yourself? Block out a full weekend.
What's the battery situation?
The supercharger drive takes over the battery's stock spot. A few customers have shuffled the factory battery around on their own, but our Fab9 LiPo4 battery system is the tidy, purpose-built fix.
Standard pulley vs. 80mm pulley — what's the difference?
Roughly 4–5 psi. The standard pulley lands around 245–250 whp; the 80mm pulley pushes output beyond 275 whp.
Will it clear my aftermarket sway bar?
The only conflict we know of is the Flyin' Miata front bar — it contacts the crank overlay pulley, so it has to go. We run the Progress front bar with these kits all the time, and everything else we've seen clears fine.
What fuel should I run?
93 octane is recommended; 91 is the minimum.
The warranty is a 1 year warranty. The warranty covers defects in manufacturing that are identified if the product is installed and used properly as instructed in the manual. HKS will repair or replace defective parts with new or reconditioned parts at no charge.
*Install note: the Flyin' Miata front sway bar is NOT compatible — it will make contact with the crank overlay pulley. You will need to revert to the factory front sway bar or install the Progress front sway bar.*
**Due to the nature of the product, there is a 10% restocking fee for returned or cancelled Supercharger systems. This is a supplier based fee that is not avoidable. Customer will also be responsible for final shipping**
3 Reviews
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Just do it
This is, without a doubt, the best thing I've done to my ND. The bump in power is massive and the feel is so smooth and this nice gradual build in power through the rev range. There's not really any lag or dips in power.
The HKS kit is 100% complete. These guys absolutely know what they are doing. (okay, you do need to get a baby battery so). The instructions are easy to follow and the kit goes together like a giant lego set. I did the whole install by myself, in my tiny garage, in about 20 hours. And honestly, nothing about the install was difficult, it's just a lot of steps.
I've actually installed this kit twice as I did an ND2 engine swap on my car.
FAB9 did my tune and it's been a process getting it exactly like I want but I'm really picky and particular.
My only complaint is that it doesn't really make any turbo noises or supercharger noises ? -
Great Kit beware FM sway bar owners
This is an awesome kit but my installer told be that the Flyin Miata front sway bar interferes with the new extended crank pulley and I tossed my oem bar.
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Easy Install and a huge linear power improvement
Easy Install and a huge linear power improvement. I installed this myself in my driveway/garage up on jack stands w/ handyman tools. One of the main reasons I purchased this SC from FAB9Tuning was that FAB9 actually writes the Tune for it! Mine is an A/T and it works great on it. I took it out on the track for the first time. What a blast!! https://www.youtube.com/watch?v=lblJeuxyPVw&t
