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When building a performance cylinder head for higher power output from larger turbochargers the power band is increased and moved higher into the RPM band. This puts increased stress on the valves resulting in valve float from the weak factory valve springs. Rev higher and increase your RPMs safely by adding Ferrea's spring retainer kit to your engine build. Heavy-duty valve springs and spring rates keep the valves operating correctly under high-load engine conditions while the extra-strength titanium retainers provide less weight for an easier revving engine.
Protects against engine failure from valve float
Safely increase your rev limit and power band
Nano-peened valve springs provide long life
Optimized design for all EA113 FSI 2.0T engines
16 Precision Wound Intake/Exhaust Valve Springs
16 Intake/Exhaust Spring Seats
8 Exact Tolerance Titanium Intake Retainers
8 Exact Tolerance Titanium Exhaust Retainers
Audi - A4 2005-2008 (B7) 2.0T EA113 TFSI engines
Audi - A6 2005-2011 (C6) 2.0T EA113 TFSI engines
Audi - A6 Allroad 2005-2011 (C6) 2.0T EA113 TFSI engines
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