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Air and Fuel› Superchargers, Turbochargers and Components

HKS

HKS GT S/C System GSE21

$9,477.56 $7,326.27 Save $2,151.29

SKU: H005 12001-AT004

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

Exclusively for FR-S/BRZ. Includes all installation parts. V3 Supercharger kit features a revised inlet pipe (larger ID) and larger supercharger pulley for optimized airflow, more power, and cooler intake temps. Optional Flash Editor with pre-programmed tunes for 91 octane and E85 (SKU: 12001-KT004A). 93-octane calibration available through HKS USA. No engine management included; proper tune required. Features: Unrestricted Supercharger, Larger Diameter Inlet Pipe, Larger Supercharger Pulley (less strain/heat), Newly Designed Supercharger Bracket. Included Components: GT S/C unit, Super Power Flow, Intercooler, Suction pipe, Injector, Chamber pipe, Special sub-computer, Relief valve, S/C bracket, Traction oil cooler, Pulley/belt, Traction oil tank. Manufacturer Notes: Modifications to radiator support, alternator bracket, oil, oil level gauge’s boss (front chain cover) required. Engine oil viscosity must be >40.
Show original supplier description
HKS GT S/C System GSE21

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandHKS
Part NumberH005 12001-AT004

Videos

HKS GT2 SUPERCHARGER INSTALL FOR THE BRZ! - Part 1

HKS GT2 SUPERCHARGER INSTALL FOR THE BRZ! - Part 1
Supercharger gets installed on BRZ

Supercharger gets installed on BRZ
HKS GT V3 Supercharger Overview | FRS BRZ 86

HKS GT V3 Supercharger Overview | FRS BRZ 86
HKS Supercharger Build First Start

HKS Supercharger Build First Start
HKS Supercharged BRZ is Almost Done!

HKS Supercharged BRZ is Almost Done!
HKS GT3 Turbocharged BRZ

HKS GT3 Turbocharged BRZ
Supercharged BRZ gets more boost!

Supercharged BRZ gets more boost!
BRZ Supercharger Build Begins

BRZ Supercharger Build Begins
HPF POWER UPGRADE | Toyota 86 - Subaru BRZ - HKS Supercharger

HPF POWER UPGRADE | Toyota 86 - Subaru BRZ - HKS Supercharger
HKS FR-S/BRZ V3 SUPERCHARGER

HKS FR-S/BRZ V3 SUPERCHARGER

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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