Skunk2 Pro-Series Forged Valves: K-series VTEC Standard-Compression (set of 16)
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Skunk2 Part#  310-05-9535

Skunk2 Ultra Series Valves for the Honda K20 and K24 are our premium line of valves; manufactured from HNV-3 martensitic steel (IN) and EV8 austenitic steel (EX) one-piece forgings. The characteristics of the austenitic nickel based alloy enable high resistance to oxidation and corrosion and are designed for engines that output extremely high temperatures. Ultra Series valves are heat-treated using a proprietary process for extraordinary strength and durability and Chromium Nitride coated using the physical vapor deposition (PVD) process. This coating significantly improves wear and heat resistance, creating conditions for more durability and long term usage. Chromium Nitride coating is a remarkable solution as it improves the friction coefficient between the valve’s stem and valve guide; a necessity for engine components that demand resistance to high heat level environments.

Currently Available for Pre-Order. Expected to Ship Fall 2026

Other valves may appear similar, but only Ultra Series Valves feature specially designed valve head profiles to optimize airflow. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. Skunk2 valvetrain components provide exceptional performance, reliability, and quality and are standard-issue on each Skunk2 vehicle that we build and support.

 

FEATURES:

Overall Valve Length (Intake/Exhaust): 109mm/ 108.6mm
Head Diameter (Intake/Exhaust): 35.00mm/ 30.00mm
Stem Thickness (Intake/Exhaust): 5.48mm/ 5.45mm
One-Piece Forged
Stainless-Steel Alloy Construction
Std. Intake/ Std. Exhaust - Dished Head - Std. Comp
3-10g Lighter Than Stock
Proprietary Heat Treatment
Chromium Nitride Coating
Optimum Sealing, Airflow, And Stability

Fitment:
K20/K24
2004 - 2007 Honda Accord (2.4L EX/LX)2002 - 2011 Honda Civic (2.0L Si)2002 - 2009 Honda CR-V (2.4L EX/LX)2003 - 2011 Honda Element (2.4L EX/LX)2002 - 2006 Acura RSX (2.0L Type S)2004 - 2008 Acura TSX (2.4L K24A2)


Add Skunk2 Pro Series Valve Springs and Titanium Retainers for ultimate valvetrain stability.

Overall Valve Length (Intake/Exhaust): 109mm/ 108.6mm
Head Diameter (Intake/Exhaust): 35.00mm/ 30.00mm
Stem Thickness (Intake/Exhaust): 5.48mm/ 5.45mm

Made from lightweight EV8 stainless steel one-piece forgings that are heat treated using a proprietary heat treatment process for exceptional strength and durability. Skunk2 valves feature a special hardened tip which will not deform or gall when used with high-lift camshafts. Though many aftermarket valves look similar, Skunk2 forged valves feature specially designed valve head profiles to optimize airflow when used with stock or performance valve jobs. After CNC-machining and polishing, a black nitride coating is applied to reduce friction and increase wear resistance. Skunk2 Racing valves are available in stock and over sizes in both standard and high compression styles