STK Performance is a name synonymous with durability, precision, and innovation in the world of high-performance valvetrain components. Among their most critical offerings are cam followers, lifters, and cam buckets, which play an essential role in converting the rotary motion of the camshaft into linear valve movement—at high RPM and under intense conditions.
1. Product Overview
Camfollowers / Lifters / Cam Buckets
These components form the interface between the camshaft and the valve assembly. They help in transmitting motion with minimal friction, accurate timing, and durability—especially under racing or high-performance stress.
2. Material Specification
STK Performance uses premium-grade materials and advanced manufacturing processes to ensure long life and optimal performance:
- Cold-Forged Chrome-Moly Steel (e.g., 8620 or 9310)
- Excellent wear resistance
- High core strength with a tough surface
- Ideal for heat treatment and surface hardening
- Carburized or Nitrided Finishes
- Enhanced surface hardness (RC 58-62)
- High fatigue resistance and improved lubrication retention
- Reduced galling and scuffing under high loads
- Tool Steel Inserts (for DLC-coated lifters)
- Used in high-end applications
- May feature Diamond-Like Carbon (DLC) Coating for ultra-low friction
- Precision Grinding & Surface Polishing
- Achieves mirror-like surface finish for reduced wear and noise
3. Uses and Applications
STK Performance lifters and cam buckets are used in:
- High-performance and race engines
- Turbocharged or supercharged builds
- Track day cars and endurance engines
- Modified street vehicles needing higher RPM stability
- OEM replacements with improved lifespan and durability
These are suitable for a wide range of engine platforms, including DOHC & SOHC.
4. Key Benefits
Durability at High RPM
Forged and hardened steel allows these parts to withstand the extreme pressures and speeds of performance cams—reducing the risk of lifter collapse or wear.
Improved Valve Timing Accuracy
Precision-machined surfaces and tight tolerances ensure smoother operation and more consistent valve timing, which translates to better power delivery.
Reduced Friction and Heat
Advanced surface finishes and optional DLC coatings help reduce friction and internal engine heat, enhancing reliability under race conditions.
Compatibility with Aggressive Cam Profiles
STK Performance followers are engineered for use with high-lift camshafts, supporting more airflow and better top-end power.
Low Maintenance and Long Service Life
Engineered for longevity, they resist pitting, spalling, and fatigue—minimizing the need for frequent replacements.
5. Conclusion
Whether you’re building a race engine from the ground up or upgrading a daily driver for spirited performance, STK Performance Cam followers, Lifters, and Cam Buckets offer the strength, precision, and longevity that serious engine builders demand. Their use of high-grade forged steel, advanced surface treatments, and meticulous machining ensures you get the most from your valvetrain—mile after high-RPM mile.