Product Overview
Complete high-performance dual valve spring and forged valve kit for VW/Audi 1.8T 20v exhaust applications. Includes 21-4N Stainless Steel forged valves, Chrome Silicon dual valve springs, and Chromoly retainers. Rated up to 9000rpm.
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
- 8 × inner valve spring
- 8 × outer valve spring
- 8 × Chromoly retainers
- 8 × Exhaust Forged Valve 30x6x104mm
Technical Specifications
Seating Pressure @ 34mm = 91lbs
Full Lift = 200lbs
Full Lift Pressure = 200lbs
Material Specifications
Forged Valves: 21-4N Stainless Steel – CNC machined, heat-treated
Valve Springs: Premium Chrome Silicon Steel – Dual spring design
Retainers: 4130 Chromoly Steel
Performance Rating: 9000rpm capability
Lift Capacity: Up to 14mm camshaft lift
Application
Designed for VW/Audi 1.8T 20v exhaust applications.
Installation Notes
Professional installation required. Not a straight forward replacement. Verify spring heights and valve travel to avoid coil bind.
