Valve spring AUDI RS6 4.2L - DOHC V8 40 VALVE (BCY) - 2002-2004 FA-S10055

All racing engines experience high-frequency harmonic fatigue that typically damages the driveline if not controlled. Engineered valve springs provide the required stability and reduce component wear. Ferrea valve springs are developed from high-strength alloys, including premium chrome silicon steel. Our springs are heat treated and stress relieved, dramatically increasing spring life. Our valve springs provide the stability needed for high speed engines while minimizing load losses for today's aggressive valve combinations Fits: AUDI RS6 4.2L - DOHC V8 40 VALVE (BCY) - 2002-2004 Dimensions: Type: Single Outer diameter: 21.5 mm Inside diameter: 15.1 mm Compressed pressure: 65 lbs Expansion pressure: 145 lbs Hardness: 216 lbs Compressed height: 22.5 mm Maximum exhaust: 11 mm References: (Suction valve - 24 pieces) In all race engines there is harmonic high-frequency fatigue, which usually destroys the drive system if it is not controlled. Properly designed valve springs ensure the required stability and reduce component wear.Ferrea valve springs have been developed from high strength alloys, including premium grade chrome-silicon steel.Our springs are heat treated and stress relieved, which radically increases the life span of the spring . Our valve springs provide the stability needed for high-speed motors while minimizing load losses for today's aggressive valve combinations.Fits: AUDI RS6 4.2L - DOHC V8 40 VALVE (BCY) - 2002-2004Dimensions: Type: SingleOutside diameter: 21.5 mmInside diameter: 15.1 mmSeat pressure: 65 lbsOpen pressure: 145 lbsRate: 216 lbsCoil bind: 22.5 mmMax Net Lift: 11 mmReferences: (Intake valve - 24 pcs)