Add to Cart The item has been added Supertech 2.5 TTRS/RS3 Upgraded spring and titanium retainer kit SPRK-A2416-5 Supertech Performance upgraded valve spring kit and Titanium retainers. Ideal for use on high powered engines producing high revs and quick changes in engine speed. We use these kits in all our... £466.67 (Inc. VAT) £466.67 (Ex. VAT) Add to Cart The item has been added Compare