Upgrade your Audi or VW 1.8T Big Turbo Setup engine with the Untd. Performance AEB Performance Cylinder Head—fully rebuilt, precision-machined, and engineered for extreme power. Featuring ported runners, new OEM lifters, OEM chain tensioner, Supertech valve guides and seals, high-flow intake and exhaust valves with upgraded valve springs, plus optional SPA Turbo 252/260 or Brian Crower 252/260 camshafts for aggressive high-RPM tuning. Fine-tune powerband control with the included IE Performance cam gear. Designed for serious performance builds, this head delivers exceptional airflow, stability, and durability, safely revving up to 9,000 RPM and capable of supporting well over 800 horsepower. Perfect for high-boost, track-ready, or street-driven Audi/VW 1.8T engines seeking maximum reliability and performance.