VAG 1.8T Supertech Valve Spring / Retainer Kit - SPRK-AUDI18T

Supertech Valve springs / retainer kit for VAG 1.8T 20V Turbo engines.

Supertech Valve Springs are made with premium Superclean Chrome Silicone Vanadium Steel alloy for higher performance and durability at high RPM's and better memory.  Computer Designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions.  Computer software also allows us to make sure that the harmonics are well under control.
The Supertech Retainers are manufacturer with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.

Spring Specifications:

Single Intake Springs:

Outer Spring -- 20.60mm OD -- 14.40mm ID 
Single 
56 lbs seat pressure -- 56 lbs @ 36.60mm 
13.60mm Max Net Lift 
23.00mm Coil Bind 
6.70 Lbs/mm Rate

Dual Exhaust Springs:

Outer Spring -- 29.10mm OD -- 21.90mm ID 
Inner Spring -- 20.50mm OD -- 15.50mm ID 
80 lbs seat pressure -- 80 lbs @ 33.20mm 
13.70mm Max Net Lift 
19.50mm Coil Bind 
10.00 Lbs/mm Rate