Ferrea Single Valve Spring | 2008 – 2012 BMW 740i & 2011 – 2013 BMW 335is (S10158)

Single Valve Spring - Set by Ferrea

Our technology allows us to provide the highest level of performance and reliability for our customers. Our association with many of the industry's leading head manufactures has given us the opportunity to implement these race proven high quality designs for all categories of racing.

Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicon steel. Our springs are heat-treated and stress relieved, which dramatically increases the spring's life. Our valve springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today's aggressive valvetrain combinations.

Please Note: Picture are for representation only. Actual product may vary.

Features

• BMW E60/E82/E91/E92) (N54)
• Type/Material/Application: Single Spring - Turbo PAC Enhanced Alloy
• Outside Diameter: 22.38 mm
• Inside Diameter: 15.52 mm
• Seat Pressure: 70 lbs @ 36.5 mm
• Open Pressure: 170 lbs @ 26.5 mm
• Rate Inch: 254 lbs
• Coil Bind: 23.15 mm
• Max Net Lift: 12.5 mm
• This Spring requires 2 Ferrea Titanium Retainers (Exhaust) # E11130 and (Intake) # E11131 and Factory supplied Spring Seat Locator /Valve Hat Seal.

Benefits

• Heat-treated and stress relieved, which dramatically increases the spring's life
• Provide the stability needed for high lift
• High rpm racing engines, while minimizing the load loss for today€™s aggressive valvetrain combinations.

Applications

• 2008 – 2012 BMW 740i
• 2011 – 2013 BMW 335is

What's In The Box?

• 1 - Valve Spring

Warranty

• No Warranty