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The Skunk2 Alpha Series Valves are precision-engineered for Honda D-Series VTEC engines, including the D16Z6, D16Y5, D16Y7, and D16Y8. Manufactured from premium HNV-3 martensitic steel (intake) and EV8 austenitic steel (exhaust) one-piece forgings, these valves deliver exceptional strength, reliability, and performance in both naturally aspirated and forced induction setups.
Each valve undergoes Skunk2’s proprietary heat-treatment process to maximize durability and is hard chrome plated to reduce friction and prevent corrosion. The optimized valve head design enhances airflow efficiency and combustion stability—translating to improved horsepower, torque, and throttle response.
Weighing up to 10 grams lighter than OEM valves, Skunk2 Alpha Valves provide faster valvetrain response and higher RPM capability, making them ideal for performance street builds and competitive racing engines.
Manufactured from HNV-3 and EV8 Stainless Steel for intake and exhaust strength
One-Piece Forged Construction for maximum reliability
Proprietary Heat Treatment Process for extreme durability
Hard Chrome Plated for reduced friction and corrosion resistance
Optimized Valve Head Design for improved airflow and sealing
3–10g Lighter Than OEM Valves for faster valvetrain response
Perfect Balance of Strength, Weight, and Flow
Tested and Proven in Skunk2 Race Engines
Direct OEM Replacement Fitment
Engine Compatibility: D16Z6, D16Y5, D16Y7, D16Y8
Overall Length (Intake/Exhaust): 118.5mm / 116mm
Head Diameter (Intake/Exhaust): 30.00mm / 26.00mm
Stem Thickness (Intake/Exhaust): 5.48mm / 5.45mm
Design: Dished Head, Standard Compression
Material: Stainless-Steel Alloy (HNV-3 / EV8)
Finish: Hard Chrome Plated
Weight Reduction: 3–10g lighter than OEM valves
Compatible with the following Honda D-Series engines:
Honda D15B / D15Y
Honda D16Y / D16Z
Alpha Series Valve Springs & Titanium Retainers Kit – P/N 344-05-1350
Alpha Series Valve Springs – P/N 311-05-1345
Alpha Titanium Retainers – P/N 308-05-1600
(8) Intake Valves – 30mm
(8) Exhaust Valves – 26mm
We are open Monday-Friday from 8am-6pm EST
Yes, customers located in and around the the Piedmont area are welcome to pick up their items from our retail location during normal business hours. Our address is:
Elite Race Fab
1514 Holbrook St Suite D-F
Greensboro, NC 27403
Elite Race Fab offers free ground shipping & handling to our retail customers within the lower 48 contiguous United States on most orders totaling $159.99 and higher, when the item being purchased is not a Freight/LTL item! Orders under $159.99 will be subject to a nominal $13.99 Flat shipping charge. Some exceptions and/or exclusions apply, in those scenarios you will be advised of any additional charges in the item details/description stating shipping exclussions/freight shipping required etc.
In regards to expedited and international shipping each order will need to be quoted on a case by case basis. You can obtain a quote two ways:
- From your shopping cart select "Request a Quote" prior to placing your order. We will review your proposed order and promptly respond with shipping estimates.
- Complete your order ahead of time indicating either expedited or international shipping during the checkout process. We will promptly determine shipping rates for your order and email you for approval and additional payment.
-Give us a call and we can ensure your item is shipped right then, to ensure you have it in time for your deadline.
We have been committed to offering all of our customers the lowest pricing throughout our website day in and day out. We value your business so much that we go a step further than our competitors. We use a third party software that proactively monitors all our competitor's websites/pricing so that we can make adjustments accordingly if needed to have the lowest prices. Thats right, no need to spend hours searching for the lowest prices, as ours will be the lowest.
As far as price matching, we dont want to write a check we cant cash, but we certainly want to earn your business. With that said, we will go above and beyond to match our competitor's pricing when it is needed. Simply email us, click the live contact button, or give us a call and be sure to have a link to our competitor's site and please factor in any shipping and handling their website will be charging. We will then ensure you get the lowest price, and either match or beat their pricing.
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