STK Performance Single Racing Valve Spring Kit Audi 2.5TFSI

Product Overview

High-performance single valve spring kit manufactured from premium Chrome Silicon steel. Engineered for reliable high-RPM operation. Eliminates valve float and maintains precise valve timing under extreme conditions. Rated up to 8500rpm.

What's Included

• 20 × Single Valve Springs
• 20 × Chromoly Retainers

Spring Specifications

Seating Pressure @ 37.2mm = 85lbs Full Lift = 175lbs

Material Specifications

Valve Springs: Premium Chrome Silicon Steel (CrSi) - Shot peened and heat treated for superior fatigue resistance and heat stability Retainers: 4130 Chromoly Steel - Lightweight with exceptional strength, reduces inertia for improved valvetrain stability Performance Rating: 8500 RPM capability Lift Capacity: Up to 12mm camshaft lift

Key Benefits

Superior valve control at high RPM - eliminates valve float and bounce Protection against coil bind under extreme conditions Compatible with aggressive camshaft profiles Track-proven reliability in motorsport applications Enhanced durability for naturally aspirated and turbocharged setups

Installation Notes

Professional installation recommended. Correct spring heights and valve travel must be verified to avoid coil bind. For camshaft installations, always check piston-to-valve clearance and verify spring installed height. Use high-zinc break-in oil on first start. This component forms part of the valve train system and must be selected to suit the intended engine configuration, RPM range, and camshaft design.