-19%
Click to zoom in
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)
Supertech
Located in San Jose, California, in the heart of Silicon Valley, Supertech was born from the same fertile ground as many other innovative companies. We utilize cutting-edge technology to fuel our growth and deliver the highest performance valves and valve train components available. Why Choose Supertech? Over 30 Years of Experience: Our legacy in the industry ensures top-quality products. Superior Performance: We provide valves and valve train components specifically designed for the racing market. Versatile Applications: Ideal for various types of racing, including: Drag Racing Rally Road Racing And more! Custom Solutions: If you can't find the perfect fit, we are always willing to work with you to custom manufacture the ideal solution for your specific needs. CUTTING EDGE TECHNOLOGY Trusted by the best in the industry, Supertech is committed to leveraging the latest advancements in technology to enhance performance and reliability. Experience the difference with our prod...
View Supertech Products
Valve Locks
Welcome to our Valve Locks collection, where safety meets innovation. Our carefully curated range of valve locks ensures that your valves are secure, preventing unauthorized access and accidental operation. Why Choose Our Valve Locks? Enhanced Security: Protect your equipment with high-quality materials that withstand tampering. Durability: Designed to endure harsh conditions, ensuring long-lasting performance. Easy Installation: User-friendly designs allow for quick and hassle-free setup. Versatile Applications: Ideal for industrial, commercial, and residential use. Featured Products Browse through our top selections of valve locks: Heavy-Duty Valve Lock: Perfect for larger valves in industrial settings. Compact Valve Lock: Designed for smaller valves, offering portability and ease of use. Weatherproof Valve Lock: Ideal for outdoor applications, resistant to rust and corrosion. Shop Now! Explore our full range of Valve Locks to find the perfect solution for your need...
View Valve Locks Products
Valves & Components
Browse all of our valves and valvetrain components at Black Ops Auto Works, including engine valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and related valvetrain hardware for performance builds, engine refreshes, and high-horsepower applications. Whether you are rebuilding a cylinder head, upgrading your valvetrain for higher RPM, or replacing worn valve train components, this collection is built for customers searching for engine valves, valve springs and retainers, valve cover gaskets, performance valve covers, and valvetrain upgrades. Shop Top Valvetrain Brands Find trusted brands in the valve and valvetrain category, including: GSC Power Division Supertech Brian Crower Ferrea Manley Performance Cometic Granatelli Moroso BLOX Racing These brands are known for performance intake valves, exhaust valves, valve spring kits, titanium retainers, valve guides, valve locks, valve seals, billet valve covers, an...
View Valves & Components ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
