Increase reliability and horsepower at the same time. As many individuals in the 2.0T community begin to install larger turbochargers and strive for higher horsepower, your engine needs to be able to handle the increased airflow and RPMs. The FSI cylinder heads are also notoriously known for breaking lifter retaining clips causing costly repairs when engine RPMs exceed the factory 6500 rev-limiter. Combine the upgraded Ferrea valve springs  with the factory lifter and you get a motor that can withstand 9,000+rpm. The valve kit is also available with stock sized or 1mm oversized valves.

(16) Single Valve springs
(16) Valve spring seats
(16) Ti retainers