HKS GTIII-RS Bolt-On Turbo Kit – 2022+ Toyota GR86 / Subaru BRZ (FA24)
- Description
The HKS GTIII-RS Bolt-On Turbo Kit is the most complete turbo system available for the 2022+ Toyota GR86 (ZN8) and Subaru BRZ (ZD8). It converts the naturally aspirated FA24 to forced induction with no cutting, no welding, and no fabrication — and it's the same kit we install and tune in-house at Kinetic Autoworks.
Power You Can Expect
| Setup | Output |
|---|---|
| Stock GR86 / BRZ (FA24) | 228 hp / 184 lb-ft (crank) |
| Stock engine + GTIII-RS kit (HKS tested, wastegate boost) | 366 PS @ 7,100 rpm / 288 lb-ft @ 3,300 rpm (crank) |
| Real-world, 93 octane pump gas | ~300–335 whp |
| Real-world, E85 blends + supporting fuel mods | ~390–400+ whp |
Boost comes from a 65 kPa (~9.4 psi) internal wastegate. Torque arrives by 3,300 rpm and holds to redline — this is the fix for the FA24's midrange, not just a peak number.
Fitment
| Vehicle | Chassis | Engine | Years | Trans |
|---|---|---|---|---|
| Toyota GR86 | ZN8 | FA24 2.4L | 2022–2026 | MT only |
| Subaru BRZ | ZD8 | FA24 2.4L | 2022–2026 | MT only |
Not compatible with 2013–2020 86/BRZ/FR-S (FA20) — HKS makes a separate kit for that platform.
What's in the Box
- HKS GTIII-RS ball-bearing turbocharger (A/R 0.60, 65 kPa internal wastegate)
- Cast exhaust manifold
- 113mm catted downpipe
- Front-mount intercooler with full piping
- HKS intake system
- Oil feed/return and coolant lines
- Blow-off valve, gaskets, brackets, and all hardware
What Else You Need
- Engine management (required): the kit does not include tuning. We calibrate these in-house on our dyno via EcuTek — the car leaves with a complete, road-verified tune.
- Fuel: 93 octane minimum recommended. E85 blends need injector/pump upgrades — ask us.
- Clutch: stock clutch is fine to roughly 300–320 whp. Beyond that, plan on an upgrade (HKS LA Clutch or equivalent).
- Engine internals: not required at wastegate boost on a healthy engine. HKS rates the kit to 450 PS on built motors.
Installation
True bolt-on, but not a driveway afternoon: plan 12–16 shop hours including coolant line rerouting and minor plastic trimming behind the crash bar. Difficulty: advanced DIY / professional install recommended. Kinetic Autoworks offers complete install + EcuTek dyno tune packages — contact us to schedule.
FAQ
Will this pass emissions? The kit includes a catted 113mm downpipe. Emissions compliance varies by state — it is not CARB-certified, so check your local requirements.
Is the stock engine safe? At wastegate boost (~9.4 psi) on a proper tune, the FA24 has proven reliable — documented owners have run 16,000+ miles at 390+ whp on stock internals. Tune quality is everything, which is why we insist on dyno calibration.
Automatic transmission? No — HKS supports manual transmission only for this kit.
How long does delivery take? These kits ship from HKS USA stock when available; special-order lead times vary. We'll confirm availability before charging your order.
