STK Performance Racing Valve Spring Kit Single + Valve Set VW/Audi EA113

Product Overview

High-performance single valve spring kit manufactured from premium Chrome Silicon. Engineered for reliable high-RPM operation and motorsport applications. Eliminates valve float and maintains precise valve timing under extreme conditions.

Engine Applications

Fits: Golf Mk5 GTI / Edition 30 · Audi A3 8P · Seat Leon Cupra · Skoda Octavia RS Engine codes: AXX, BWA, BYD

What's Included

• 16 × Single Valve Springs
• 16 × Chromoly Retainers
• 8 × Inlet Forged Valves
• 8 × Exhaust Forged Valves

Technical Specifications

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

Material Specifications

Valve Springs: Premium Chrome Silicon (CrSi) - Shot peened and heat treated for superior fatigue resistance Retainers: 4130 Chromoly - Reduces inertia while ensuring long-term durability Performance Rating: 8500 RPM capability Lift Capacity: Up to 12mm camshaft lift

Application

Designed for high-performance EA113 platform engines. Compatible with high-lift camshafts and performance builds.

Installation Notes

Professional installation recommended. Verify spring heights and valve travel to avoid coil bind.