STK Performance Racing Valve Spring Inlet Audi 1.8T

Product Overview

High-performance dual valve spring kit for Audi 1.8T 20v inlet applications. Manufactured from premium Chrome Silicon steel with lightweight Chromoly retainers. Eliminates valve float and maintains control at 8500+ RPM.

Engine Applications

Fits: Golf Mk4 GTI · Audi A3 8L · Audi A4 B5 / B6 · Audi TT 8N · Seat Leon · Skoda Octavia · Passat B5 Engine codes NA — ADR, APT, ARG, AGN, AFY, AVC, ARH Turbo — AEB, AGU, AJH, AJL, AJQ, AMB, AMK, AMU, APH, APX, APY, AQX, AUM, AUQ, AWP, AWD, AWW, AWM, AWT, ARY, ARX, ARZ, AVJ, BAM, BEA, BEX, BFB, BJX, BBU, BKV, CFMA

What's Included

• 12 × Inlet SINGLE Valve Springs
• 12 × Chromoly Retainers

Technical Specifications

Seating Pressure 34mm 75lbs Full Lift Pressure = 135lbs

Material Specifications

Valve Springs: Premium Chrome Silicon Steel - Dual spring configuration for optimal pressure Retainers: 4130 Chromoly Steel - Lightweight with exceptional strength Performance Rating: 8500 RPM capability Lift Capacity: Up to 14mm camshaft lift

Application

Designed for Audi 1.8T 20v inlet valve applications with high-lift camshafts.

Installation Notes

Professional installation required. Verify spring heights and clearances. Ensure forged valves are fitted with this kit.