Skunk2 Alpha Series Honda/Acura +1mm K Series VTEC Valve (Standard Compression)

SKU: SKK310-05-1555

Valves

SK Alpha Valves...

Skunk2 Racing

Skunk2 Alpha Series Honda/Acura +1mm K Series VTEC Valve (Standard Compression)

SKU: SKK310-05-1555

Valves

SK Alpha Valves...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Skunk2 Alpha Series Valves for the Honda K20 and K24 are manufactured from HNV-3 martensitic steel (IN) and EV8 austenitic steel (EX) one-piece forgings. Each valve is heat-treated using a proprietary process for extraordinary strength and durability and then hard chrome plated to further increase strength, significantly reduce friction, and increase corrosion resistance. Other valves may appear similar, but only Alpha 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.

Product Overview

Skunk2 Alpha Series valves are manufactured from HNV3 martensitic steel (IN) and EV8 austenitic steel (EX) one-piece forgings, and each valve is heat-treated using a proprietary process for extraordinary strength and durability. Alpha Series Valves feature hard chrome plating and fully machined valve heads. Other valves may appear similar, but only Alpha 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. During development, each valvetrain component is tested both on the dyno and the road. Manufactured from the best materials available in a state-of-the-art manufacturing environment ensure that Skunk2 valvetrain components provide exceptional performance, reliability, and quality. These components remain standard-issue on each Skunk2 vehicle that we build and support. *FEATURES:* * One-Piece Design * Stainless-Steel Alloy Construction * 3-10g Lighter Than Stock * Proprietary Heat Treatment * Optimum Sealing, Airflow, And Stability * Standard-Compression and High-Compression Valves Available

Features and Benefits

Overall Valve Length (Intake/Exhaust) 109mm/ 108.6mm
Head Diameter (Intake/Exhaust) 36.00mm/ 30.00mm
Stem Thickness (Intake/Exhaust) 5.48mm/ 5.45mm
One-Piece Design
Stainless Steel Alloy Construction
3-10g Lighter Than Stock
Proprietary Heat Treatment
Optimum Sealing/Airflow/Stability

Product Details

Description:	Alpha Series Valve Set
Exhaust:	29mm x 108.85mm x 5.45mm
Head Diameter (Intake/Exhaust):	36.00mm/30.00mm
Intake:	36mm x 108.85mm x 5.48mm
Part Number:	skk310-05-1555
WARNING CA Proposition 65 Message:	WARNING: This product can expose you to chemicals including lead; which is known to the State of California to cause cancer. For more information; go to www.P65Warnings.ca.gov.
WARNING CA Proposition 65:	Yes

Part Type

Valves

Data: v4.2 - Upd: 2026-10-13 20:56:03

Features

3-10g Lighter Than Stock
Head Diameter (Intake/Exhaust) 36.00mm/ 30.00mm
One-Piece Design
Optimum Sealing/Airflow/Stability
Overall Valve Length (Intake/Exhaust) 109mm/ 108.6mm
Proprietary Heat Treatment
Stainless Steel Alloy Construction
Stem Thickness (Intake/Exhaust) 5.48mm/ 5.45mm

Specifications

Product Attributes - Brand: Skunk 2
Product Attributes - Manufacturer's Part Number: 310-05-1555
Product Attributes - Part Type: Valves
Product Attributes - Product Line: Skunk2 Racing Alpha Series Valves
Product Attributes - UPC: 841150910906
Product Attributes - Valve Position: Intake/Exhaust
Product Attributes - Intake Valve Head Diameter (in.): 1.417 in.
Product Attributes - Exhaust Valve Head Diameter (in.): 1.181 in.
Product Attributes - Intake Valve Head Diameter (mm): 36.000mm
Product Attributes - Exhaust Valve Head Diameter (mm): 30.000mm
Product Attributes - Intake Valve Stem Diameter (in.): 0.215 in.
Product Attributes - Exhaust Valve Stem Diameter (in.): 0.214 in.
Product Attributes - Intake Valve Stem Diameter (mm): 5.48mm
Product Attributes - Exhaust Valve Stem Diameter (mm): 5.45mm
Product Attributes - Intake Overall Valve Length (in.): 4.291 in.
Product Attributes - Exhaust Overall Valve Length (in.): 4.275 in.
Product Attributes - Intake Overall Valve Length (mm): 109.000mm
Product Attributes - Exhaust Overall Valve Length (mm): 108.600mm
Product Attributes - Undercut Stem: No
Product Attributes - Swirl-Polished: No
Product Attributes - Valve Material: HNV-3 martensitic steel/EV8 stainless steel
Product Attributes - Lock Groove Quantity: 1-groove
Product Attributes - Valve Head Style: Dished
Product Attributes - Quantity: Sold as a set.
Product Attributes - Notes: Intake valve is 1mm oversized.

Reference Information

Brand Name/s	Skunk2 Racing
StreetFX SKU	skk310-05-1555
SFX Item ID	4442084
Supplier Item Code	4442084
Manufacturer SKU	310-05-1555
Manufacturer UPC	841150910906
Alternative References	skunk2, SK2-310-05-1555, +1mm