Supertech
Supertech Honda F20/K20 Dual Valve Spring Kit - SPRK-H1021D-ST
- SKU:
- SPTSPRK-H1021D-ST
- UPC:
- 01037721243679
- MPN:
- SPRK-H1021D-ST
- Availability:
- Regularly stocked product
Description
What are the main benefits of using Supertech's Dual Valve Spring Kits?
Supertech Dual Valve Spring Kits deliver superior valve control for maximum power and responsiveness, achieving higher RPM limits and enhanced valvetrain stability.
Is professional installation required for Supertech Dual Valve Spring Kits?
Professional installation is recommended for Supertech Dual Valve Spring Kits to ensure optimal performance and durability at extreme RPMs.
Supertech Dual Valve Spring Kits are engineered for extreme RPMs, ensuring peak performance and durability across motorsport applications with a usage score of 9. These high-performance valve springs and retainers provide superior valvetrain stability for demanding conditions. Install these critical components with confidence for unmatched engine performance.
What Owners Say
Owners and enthusiasts recognize these dual valve springs as serious high-performance components, proven to support over 800 horsepower and handle RPM ranges exceeding 10,500. The consensus is clear: these are purpose-built for aggressive builds where valve float prevention at high RPM is critical, not a casual upgrade for street applications. Enthusiasts frequently compare Supertech against GSC options when planning builds, though some note the dual spring design requires stronger compression tools during installation compared to stock components. The reduced mass advantage of beehive alternatives comes up in discussions, but builders chasing extreme power and rev limits consistently trust Supertech's track record across multiple platforms, making these springs a well-established choice for demanding engine builds.
Why Choose the SPT Dual Valve Spring Kits
Delivers superior valve control for maximum power and responsiveness.
Achieves higher RPM limits, unlocking your engine's true potential.
Provides enhanced valvetrain stability for extreme performance conditions.
Transforms your engine's reliability under demanding track use.
Who Is This For?
Track / Autocross — 9/10
Engineered for extreme RPMs, peak performance and durability.
Drag Racing — 9/10
Engineered for extreme RPMs, peak performance and durability.
Racing Competition — 9/10
Engineered for extreme RPMs, peak performance and durability.
Street Performance — 7/10
Supports extreme RPMs for enhanced engine performance.
Engine Performance — 10/10
Engineered for extreme RPMs, ensuring peak performance.
Additional Resources
Additional Information
Clearance Item: |
N |
MPN: |
SPRK-H1021D-ST |
Proposition 65: |
N |
Case Lot Quantity: |
1 |
Category: |
Engine Components>Valve Springs, Retainers |
Universal Fitment: |
Y |
Track / Autocross: |
9/10 |
Drag Racing: |
9/10 |
Racing Competition: |
9/10 |
Street Performance: |
7/10 |
Engine Performance: |
10/10 |
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