SKU: 82004-AK002 | UPC: 4957266371923
HKS 19.8N/MM Helper Spring Set for 2013-2021 Toyota 86, Subaru BRZ, Scion FR-S
The HKS 19.8N/mm Helper Spring Set installs with HKS Hipermax coilovers to hold consistent preload on main springs. Designed for 2013-2021 Toyota 86, Subaru BRZ and Scion FR-S models, these springs prevent sagging at ride height for reliable suspension action. Drivers gain sharper turn-in and stable cornering on street or track.
Key Features
- 19.8N/mm Spring Rate: Matches HKS coilover tuning for even load distribution and prevents main spring bottoming under light compression
- High-Tensile Steel Build: Resists fatigue over long-term use while keeping precise coil spacing
- 85mm Free Length: Provides ample travel support without limiting damper stroke in Hipermax systems
- Direct HKS Compatibility: Bolts on with factory-spec inner diameter for 60mm coilover struts
- Pair Quantity: Complete set for front or rear axle replacement to restore full suspension performance
Product Notes
- Inspect coilover perch alignment before install to ensure level seating
- Clean springs regularly to avoid debris buildup affecting preload
- Ships in protective sleeve to prevent bending during transit
Installation Notes
- Professional installation recommended.
- Use spring compressor tool to safely preload main spring before adding helper
- Compatible with HKS Hipermax 4, S and R Spec coilover kits only
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2016 | Scion | FR-S | Base |
| 2013-2020 | Subaru | BRZ | Base, Limited, Premium, tS |
| 2017-2021 | Toyota | 86 | Base, GT, Hakone Edition |
Why Choose HKS?
- 45+ years of JDM motorsport development refines every component
- Rigorous dyno and track testing ensures real-world durability
- Exact tolerances from Japanese manufacturing deliver repeatable results
Frequently Asked Questions
- Q: Will this fit my 2015 Subaru BRZ with HKS Hipermax coilovers?
A: Yes, the 19.8N/mm rate pairs directly with Hipermax kits on 2013-2020 BRZ models for front or rear use - Q: What material are the springs made from?
A: High-tensile chrome-vanadium steel with corrosion-resistant finish for extended service life - Q: Does HKS offer a warranty on this part?
A: One-year limited warranty covers manufacturing defects when installed by certified shop
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact box 4 x 4 x 4 inches
- Weight: 0.3 lbs
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