Ferrea Dual Valve Spring | 2004-2011 Audi A3/TT (S10148)

Dual Valve Springs by Ferrea

Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear.

Ferrea Valve Springs are developed from high strength alloys, including premium grade chrome silicon steel. These springs are manufactured with state-of-the-art equipment. Our springs are heat-treated and stress relieved, which dramatically increases the springs life. Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea Valve Springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for todays aggressive valvetrain combinations.

Please Note: This Spring requires Ferrea Titanium Retainer # E11122 and BOTH Ferrea Spring Seat Locators # SL1131 & SL1132

Features

• 3.2L – DOHC 24 Valve
• Type/Material/Application: Dual Spring – Endurance – Special Alloy
• Outside Diameter: 18.23 mm/25.19 mm
• Inside Diameter: 13.4 mm/18.23 mm
• Seat Press.: 75 lbs. @37.5 mm
• Open Press: 180 lbs. @27.5 mm
• Rate Inch: 266 lbs
• Coil Bind: 24.3 mm
• Max Net Lift: 12 mm

Benefits

• Reduce valvetrain component wear
• Provide the stability needed for high lift, high rpm racing engines
• Helps minimize the load loss for todays aggressive valvetrain combinations

Applications

• 2004-2011 Volkswagen Golf Mk5 R32
• 2004-2011 Volkswagen Transporter T5
• 2004-2011 Audi A3
• 2004-2011 Audi TT

What’s In The Box?

• 1 – Valve Spring

Warranty

• No Warranty