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GSC Subaru FA20 WRX/BRZ/FRS Dual Cylindrical Valve Spring Kit - Black Ops Auto Works
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GSC Subaru FA20 WRX/BRZ/FRS Dual Cylindrical Valve Spring Kit

GSC5256
GSC5256
Valve Springs, Retainers
2 Units In Stock - Ships Next Business Day
$ 528.94 $ 449.60
$ 449.60

SKU: 5256

GSC Subaru FA20 WRX/BRZ/FRS/86 Dual Cylindrical Valve Spring Kit 2013-2022

GSC Power-Division Dual Cylindrical Valve Spring Kit delivers precise valvetrain control for Subaru FA20 engines in WRX 2015-2021 BRZ 2013-2021 Scion FRS 2013-2016 and Toyota 86/GR86 2017-2022. These springs maintain stability at 10000+ RPM to eliminate valve float during high boost and aggressive driving. Paired with lightweight titanium retainers this kit supports larger cams for increased power output.

Key Features

  • Dual Cylindrical Design: Provides bind-free motion and consistent spring rates for smooth valve operation across full lift range
  • Spring Pressures: 117 lbs at seat 1.717in 289 lbs open at 1.150in 0.567in lift with 172 lbs/in rate
  • Titanium Retainers: 10-degree lightweight retainers reduce valvetrain inertia for quicker response and higher revs
  • High RPM Rating: Engineered for 10000+ RPM capability in tuned FA20 setups
  • Complete Kit: Includes 16 springs and 16 retainers for direct bolt-on installation

Product Notes

  • Check intake and exhaust valve stem heights after installation to confirm proper geometry
  • Compatible with cams up to 12.0mm 0.472in lift
  • Black oxide coating resists corrosion for long-term durability

Installation Notes

  • Professional installation recommended.
  • Measure coil bind clearance and installed heights during assembly
  • Requires 10-degree valve locks compatible with stock Subaru valves

This Part Fits

Year Make Model Submodel
2015-2021 Subaru WRX All
2013-2021 Subaru BRZ All
2013-2016 Scion FR-S All
2017-2021 Toyota 86 All
2022+ Toyota GR86 All

Why Choose GSC?

  • Proven in drag racing and endurance events worldwide
  • Precision machined chromoly steel construction
  • Lifetime warranty on springs against failure

Frequently Asked Questions

  • Q: Does this fit Subaru WRX STI models?
    A: No this kit fits only FA20F/FH/D engines in WRX BRZ FRS 86 GR86 STI uses EJ257 engine
  • Q: What materials are used in construction?
    A: High-tensile chrome silicon steel springs with titanium 10-degree retainers and black oxide finish
  • Q: What warranty is provided?
    A: Lifetime warranty covers spring breakage under normal use contact GSC for details

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Foam-filled box 9 x 6 x 4 inches
  • Weight: 2.1 lbs

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