HKS 2017+ Civic Type R FK8/FL5 GT4845 Turbo Kit | 11004-AH006
HKS 2017+ Civic Type R FK8/FL5 GT4845 Turbo Kit | 11004-AH006
HKS
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PRODUCT DETAILS ▾
The HKS GT4845 Sports Turbine Kit (part 11004-AH006) is a bolt-in turbocharger upgrade for the Honda Civic Type R FL5 (2023+) and FK8 (2017-2021), K20C engine. It uses the same layout as the factory turbo, so it fits without modification, and holds boost at high rpm where the stock turbo falls off.
Fitment
- Honda Civic Type R FL5, 2023 and newer (HKS lists 09/2022-on production)
- Honda Civic Type R FK8, 2017-2021
Specifications
- Manufacturer part number: 11004-AH006
- Turbo: HKS GT4845
- Boost control: factory ECU via electric actuator
- Direct fit, same layout as stock; primary exhaust pressure same as stock
- No fuel system upgrade required (HKS)
HKS test results
- 282 kW (384 PS) at 6,600 rpm vs 242 kW (330 PS) stock
- 492 Nm at 4,680 rpm vs 478 Nm stock
- Test car used the HKS Mastery ECU Phase 3 (Japan-market only), HKS Legamax Sports exhaust, and HKS intercooler and piping kits
What's in the box
- GT4845 turbocharger
- Gaskets for turbo, exhaust, intake, water lines and oil lines
- Studs and bolts for turbo replacement
Good to know
Not CARB legal and not for sale in California. The turbo runs without a piggyback controller, but HKS recommends an ECU remap to get the full benefit, and an upgraded intercooler for safe high-power use (HKS 13001-AH007 sold separately).
FAQ
Does the GT4845 need a tune?
It can run on the factory calibration, but HKS recommends remapping to fully use the turbo.
Do I need bigger injectors or a fuel pump?
HKS says no fuel system upgrade is required.
Does it fit both FK8 and FL5?
Yes. HKS lists the same part number, 11004-AH006, for both.
How long does shipping take?
Delivery times vary by part because many items ship directly from the manufacturer or distributor. Message us before ordering and we'll confirm current lead time.
Can I return it?
Yes. Returns are accepted within 30 days of delivery. The customer pays return shipping, and a restocking fee of up to 20% may apply.
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
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- Brand reputation matters — we favor proven manufacturing
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WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
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The HKS GT4845 Sports Turbine Kit (part 11004-AH006) is a bolt-in turbocharger upgrade for the Honda Civic Type R FL5 (2023+) and FK8 (2017-2021), K20C engine. It uses the same layout as the factory turbo, so it fits without modification, and holds boost at high rpm where the stock turbo falls off.
Fitment
- Honda Civic Type R FL5, 2023 and newer (HKS lists 09/2022-on production)
- Honda Civic Type R FK8, 2017-2021
Specifications
- Manufacturer part number: 11004-AH006
- Turbo: HKS GT4845
- Boost control: factory ECU via electric actuator
- Direct fit, same layout as stock; primary exhaust pressure same as stock
- No fuel system upgrade required (HKS)
HKS test results
- 282 kW (384 PS) at 6,600 rpm vs 242 kW (330 PS) stock
- 492 Nm at 4,680 rpm vs 478 Nm stock
- Test car used the HKS Mastery ECU Phase 3 (Japan-market only), HKS Legamax Sports exhaust, and HKS intercooler and piping kits
What's in the box
- GT4845 turbocharger
- Gaskets for turbo, exhaust, intake, water lines and oil lines
- Studs and bolts for turbo replacement
Good to know
Not CARB legal and not for sale in California. The turbo runs without a piggyback controller, but HKS recommends an ECU remap to get the full benefit, and an upgraded intercooler for safe high-power use (HKS 13001-AH007 sold separately).
FAQ
Does the GT4845 need a tune?
It can run on the factory calibration, but HKS recommends remapping to fully use the turbo.
Do I need bigger injectors or a fuel pump?
HKS says no fuel system upgrade is required.
Does it fit both FK8 and FL5?
Yes. HKS lists the same part number, 11004-AH006, for both.
How long does shipping take?
Delivery times vary by part because many items ship directly from the manufacturer or distributor. Message us before ordering and we'll confirm current lead time.
Can I return it?
Yes. Returns are accepted within 30 days of delivery. The customer pays return shipping, and a restocking fee of up to 20% may apply.
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