IAG Beehive Valve Spring and Titanium Retainer Set WRX 02-14 / STI 04-21 | IAG-ENG-3206

Product Fitment:

2002-2014 Subaru WRX

2004-2021 Subaru STI

2004-2013 Subaru Forester XT

2005-2012 Subaru Legacy GT

Strengthen your valvetrain , RPM potential, and efficiency with the IAG Beehive Valve Spring and Titanium Retainer Set—built for aggressive performance without sacrificing reliability.

Features:

• Reduces valvetrain weight by up to 68 grams vs. OEM components

• Supports higher RPM and boost levels than factory valve springs
  

• Ideal for street, drag, and road racing builds
  

Spring Pressure Ratings:

• Seat Pressure: 92 lbs @ 1.340"

• Open Pressure: 241 lbs @ 0.893"

• Recommended maximum RPM: 9000

Titanium Retainers:

• Lightweight titanium significantly reduces mass at the top of the valve

• Allows more precise, stable valve movement at high RPM

• Evenly distributes spring loads to reduce failure risk under stress

• Precision-machined in-house for consistent quality and durability

High-Quality Valve Springs:

• Constructed from ovate chrome silicone alloy steel

• Designed to handle extreme stress and shock loading in high-RPM use

• Compatible with OE camshafts and popular aftermarket cams like GSC S1, S2, and S3

• Engineered for use in stock replacement and performance camshaft setups

What’s Included:

• (16) IAG Beehive Valve Springs

• (16) IAG Titanium Retainers

• Valve locks/keepers not included