STK Performance Racing Valve Spring Kit VW Golf 5 GTi

Product Overview

High-performance single valve spring kit for VW Golf 5 GTi (BWA / AAX). Manufactured from premium Chrome Silicon steel with lightweight Chromoly retainers. Eliminates valve float and coil bind, rated at 8500rpm. Ideal for naturally aspirated and turbocharged builds.

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

Technical Specifications

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

Material Specifications

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

Application

Designed specifically for VW Golf 5 GTi (BWA / AAX). Compatible with high-lift camshafts and forced induction applications.

Installation Notes

Professional installation recommended. This is not a straight forward replacement kit. Correct spring heights and travel are essential to avoid coil bind.