Supertech Performance SPRK-AUDI18T-DR Dual Valve Spring Kit VW Audi 1.8T 20V

The Supertech Performance SPRK-AUDI18T-DR is a complete dual valve spring and titanium retainer kit engineered specifically for VW and Audi 1.8T 20-valve 5-cylinder engines. This heavy-duty DR (dual rate) version features upgraded seat pressure for aggressive camshaft profiles and high-RPM performance applications.

Key Features:

• Heavy-duty dual valve springs with 91 lbs seat pressure at 33.2mm for maximum stability
• 14.70mm maximum lift capability supports high-performance camshafts
• Premium Superclean Chrome Silicon Vanadium steel alloy construction for extreme durability
• CNC-machined titanium retainers manufactured from military-certified alloy
• Computer-designed to control wire stress and harmonics at high RPM
• 12.5 lbs/mm spring rate with 228 lbs open pressure at 11mm lift
• Complete kit includes 20 valve springs, 20 titanium retainers, and 8 exhaust seat locators

Technical Specifications:

• Seat Pressure: 91 lbs @ 33.2mm
• Open Pressure: 228 lbs @ 11mm lift
• Maximum Lift: 14.70mm
• Coil Bind: 18.50mm
• Spring Rate: 12.5 lbs/mm
• Outer Spring OD: 30.20mm / Inner Spring OD: 22.20mm
• Inner Spring ID: 16.80mm

Kit Contents:

• 12 intake valve springs (SPR-A2095)
• 8 exhaust dual valve springs (SPR-H100DR-AU)
• 12 titanium intake retainers (RET-AUVIT2)
• 8 titanium exhaust retainers (RET-AUVE/T1)
• 8 exhaust valve seat locators (SEAT-H1000)

This precision-matched valvetrain kit is ideal for performance enthusiasts running aggressive camshafts, high boost applications, or engines that exceed stock rev limits. The DR version's increased seat pressure provides superior valve control and prevents valve float in demanding racing conditions. Suitable for street performance, track use, and competition builds requiring exceptional reliability and performance.