What is the main advantage of the 'XP' designation for these valve springs?

The 'XP' stands for Extra Pressure, meaning these springs have a higher seat pressure. This is beneficial for turbocharged or extreme high-RPM engines where maintaining valvetrain control is critical.

What materials are used in the construction of these valve springs?

These valve springs are manufactured exclusively from super-clean, chrome-silicone wire that is milled in Japan. The wire undergoes inspection, heat-treatment, shot-peening, chemical polishing, and a nitriding process for strength and durability.

Are these valve springs suitable for stock camshafts?

While these springs are designed to handle high-lift camshafts and extreme RPMs, they can also be used with stock camshafts if you are building a high-performance engine. However, their primary benefit is seen in modified or high-RPM applications.

Skunk2 Pro Series Honda/Acura B-Series VTEC XP Valve Spring Set (Dual Springs)

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Specifications

Brand: Skunk2 Racing
Part #: 311-05-7350
UPC: 873265006809

Skunk2 Pro Series Honda/Acura B-Series VTEC XP Valve Spring Set (Dual Springs)

Name: Skunk2 Pro Series Honda/Acura B-Series VTEC XP Valve Spring Set (Dual Springs)
Brand: Skunk2 Racing
Price: 410.91 USD
Availability: InStock

$410.91

Only 5 left in stock

Fits 1992-2001 Acura Integra. Skunk2 Pro Series XP dual valve spring set for B-Series VTEC engines, preventing valve float at high RPM.

Key Features

Fits 1992-2001 Acura Integra, 1994-1997 Honda Civic del Sol, and 1999-2000 Honda Civic.
Includes a set of 16 dual valve springs.
Features a seat pressure of 93 lbs at 1.320 inches.
Offers an open pressure of 238 lbs at 0.820 inches.
Has a coil bind height of 0.718 inches, accommodating higher lift camshafts.
Manufactured from super-clean, chrome-silicone wire milled in Japan.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Acura Integra 1992-2001
Honda Civic 1999-2000
Honda Civic del Sol 1994-1997

Product Details

This kit gives you a set of 16 Skunk2 Pro Series XP dual valve springs, specifically made for Honda/Acura B-series VTEC engines. These springs are designed to keep your valvetrain stable, especially when you're pushing your engine to higher speeds or running a turbo setup. They're built to handle the demands of high-lift camshafts and sustained high-RPM use, helping to prevent valve float even past 10,000 RPM.

Skunk2 uses super-clean, chrome-silicone wire milled in Japan for these springs, which is inspected and treated for strength and durability. The dual spring design, with inner and outer springs having different frequencies, works together to maintain valvetrain stability. They have a seat pressure of 93 lbs at 1.320 inches and an open pressure of 238 lbs at 0.820 inches, with a coil bind height of 0.718 inches, allowing for higher lift camshafts. This construction helps resist load loss over time, even under tough operating conditions.

These springs are a solid option if you're rebuilding the top end of your B-series VTEC engine and need reliable valvetrain control for performance applications.