For Audi enthusiasts and tuners, the 1.8T 20-valve engine has long been a staple of performance builds. Whether you’re building a responsive street car or a full-blown track weapon, unlocking the full potential of this iconic turbocharged inline-four requires more than just a tune and bolt-ons — and that’s where STK Performance comes in.
Precision-Engineered Camshafts for the Audi 1.8T 20V
STK Performance’s camshafts for the 1.8T 20V are engineered from high-grade chilled cast iron precision blanks, ensuring strength and longevity even under the extreme stresses of high-RPM operation. Designed for aggressive performance profiles, STK cams optimize valve timing to improve air intake and exhaust flow — the key to unlocking significant horsepower and torque gains.
Performance Gains:
- Up to 40kw increase (depending on cam profile and supporting mods)
- Improved mid to high-RPM power band
- Enhanced turbo spool and top-end breathing
- Better throttle response and driveability
Whether you’re running a stock turbo or a high-flow hybrid or big turbo setup, STK offers camshaft profiles matched to your build goals — from street performance to race-focused applications.
Valvetrain Upgrades: Strength Where It Matters
Pairing STK camshafts with their high-performance valvetrain components ensures reliability and optimal valve control at elevated RPMs. STK Performance offers a complete suite of valvetrain products tailored for the Audi 1.8T 20V platform:
STK Performance Valve Springs
- High-tensile chrome-silicon steel
- Designed for high-lift camshafts and sustained high-RPM use
- Prevent valve float and bounce
- Ideal for engines revving beyond 7000 RPM
STK Forged Valves
- One-piece forged stainless steel for intake/exhaust
- Lightweight for faster response, yet incredibly durable under heat and pressure
- Suitable for high-boost, high-EGT environments
Why Choose STK for Your Audi 1.8T?
✔ Proven Performance: Dyno and track-tested products used in high-output builds worldwide
✔ Precision Fitment: Engineered specifically for the 1.8T 20V platform — no guesswork
✔ Motorsport Quality: Materials and craftsmanship meet or exceed OEM and motorsport-grade tolerances
✔ Reliability at High RPM: Eliminate valve float and cam wear in high-revving turbo applications
Ideal Applications
- Street builds with hybrid turbos or upgraded K04 setups
- Track and autocross cars requiring top-end power and quick spool
- Drag builds pushing 400–600+ HP
- Tuned daily drivers looking for reliable, usable power gains
Final Word:
The Audi 1.8T 20V has more to offer than its stock configuration allows. STK Performance camshafts and valvetrain upgrades provide a solid foundation to extract more power, rev higher, and maintain engine integrity under extreme performance demands. If you’re serious about getting the most out of your build — on the street or track — STK should be your first stop for precision valvetrain upgrades.
Performance starts with control. STK gives you both.