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SKU: KPR-6S-7-12 | UPC: 1037721244428
Supertech 6mm Single Valve Lock Conversion Set of 12 (Req 2 Per Valve)
The Supertech KPR-6S-7-12 6mm Single Valve Lock Conversion Kit is a high-performance upgrade for Honda/Acura engines using 6mm valve stems (K20, K24, B-series, D-series, F-series, H-series, etc.). This set of 12 single groove valve locks (requiring 2 per valve, for 6 valves) converts stock multi-groove or OEM locks to Supertech's precision single-groove design. Manufactured from premium hardened steel with exact tolerances, these locks ensure secure valve stem retention, reduced valve float at high RPM, and improved longevity under extreme conditions. Ideal for naturally aspirated, turbo, or race K-series builds running high-lift cams, upgraded springs, or high-RPM operation. Sold as a set of 12 (covers 6 valves – order quantity needed for full head).
Key Features & Benefits
- Precision Single-Groove Design Secure fitment with Supertech valves or compatible aftermarket stems
- Hardened Steel Construction High strength and wear resistance for high-RPM durability
- Exact Tolerances Eliminates play, reduces valve float, and improves valve train stability
- Conversion Kit Allows use of Supertech single-groove valves in stock or modified heads
- Supertech Quality Trusted in motorsports for precision, reliability, and performance
Specifications
| Specification | Detail |
|---|---|
| Part Number | KPR-6S-7-12 |
| Brand | Supertech |
| Application | 6mm valve stem engines (K20, K24, B-series, etc.) |
| Valve Stem Diameter | 6mm |
| Lock Style | Single Groove |
| Quantity | Set of 12 (covers 6 valves – 2 locks per valve) |
| Material | Hardened steel |
Whats Included
- Set of 12 Supertech single-groove valve locks (6mm stem compatible)
Product Notes
- Requires 2 locks per valve set of 12 covers 6 valves (order 2 sets for full 16-valve head)
- Compatible with Supertech single-groove valves or other aftermarket 6mm valves
- Improves valve train stability at high RPM and with high-lift cams
- Essential for turbo or race K-series builds with upgraded springs/retainers
- Made in Europe Supertech's motorsports-proven precision and quality
Installation Notes
- Estimated time: 4-8 hours (full head work required)
- Requires cylinder head removal, valve job, and professional assembly
- Install with compatible single-groove valves, keepers, and upgraded springs/retainers
- Check valve-to-piston clearance and spring installed height
- Professional engine builder installation strongly recommended
This Part Fits
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| Various | Acura/Honda | K20-Powered Vehicles | K20A/K20Z Series | 6mm exhaust/intake valves – high-performance conversion |
| Various | Honda | B/D/F/H-Series | B-series, D-series, F-series, H-series | 6mm valve stem engines – custom racing/turbo builds |
Why Choose Supertech Single Groove Valve Locks?
- Precision single-groove design for secure high-RPM retention
- Hardened steel construction withstands extreme heat and stress
- Reduces valve float and improves stability with high-lift cams
- Supertech trusted in professional racing and high-performance engine builds
Frequently Asked Questions
-
Q: How many locks do I need for a full head?
A: 32 locks total (2 per valve x 16 valves); set of 12 covers 6 valves order 3 sets for full coverage. -
Q: Are these for intake or exhaust valves?
A: Universal for 6mm stem valves commonly used on exhaust but compatible with both. -
Q: Do I need matching valves?
A: Yes, best with Supertech single-groove valves; check compatibility with other brands.
Shipping and Handling
- Method: UPS / FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure protective packaging
- Weight: Approx. 1-2 lbs (set of 12 locks)
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