For the past 45 years, Ferrea Racing has been manufacturing hard core racing components for various types of engines in a wide range of categories worldwide.  The company uses the latest technological advances gained through the development of engine valve programs for Formula 1, Indy Car, NASCAR, Sprint Car, and Drag and Road racing teams.  This technology allows Ferrea Racing to provide the highest level of performance and reliability available in the industry.  Made in the USA.


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 and are then heat-treated and stress relieved which dramatically increases the spring’s 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 today’s aggressive valvetrain combinations.


The Ferrea racing valve springs must be utilized with Ferrea E11103 titanium retainers and SL1112 seat locators, they are included in the kit.  Will also work with Ferrea oversize valves.  This kit contains all of the following items and have the following specifications:

• (2) Ferrea S10130 racing valve springs
• (2) Ferrea E11103 Titanium valve retainers
• (2) Ferrea SL1112 steel alloy seat locators
• (4) 5mm valve keepers for Ferrea racing valves

Titanium Retainers

Alloy Steel Seat Locators

These Ferrea valve spring kits will fit ALL of the following models:

• Arctic Cat DVX400 ATV, 2004-2008
• Kawasaki KLX 400, 2001-2008
• Kawasaki KFX400 ATV, 2001-2008
• Suzuki DRZ400, 2000-2012
• Suzuki LTZ400 ATV, 2000-2010