KVS275-BT - Beehive spring and titanium retainer kit for the Audi 5.2L V10 engine.

Premium quality spring steel wound in USA by PAC. Made with advanced heat treatment processing and surface finishing techniques (nano peening) to extend fatigue life.
High spring frequency to allow for better spring surge control at high rpm. Based on the same spring and valvetrain technology Kelford has applied to our successful Audi DAZA program.
30% higher seat pressure than the OEM spring. Designed for high boost and high rpm applications.

Kit includes spring locator and additional shim which can be placed under the locator for engines running extreme boost or high rpm.

Specs with spring locator only:
95bs seat pressure at 36.0mm installed height. 205lbs at 11.0mm valve lift.

Specs with spring locator and additional 1mm shim under locator:
105bs seat pressure at 35.0mm installed height. 220lbs at 11.0mm valve lift.

Coil bind at 23.5mm. Install supplied spring seat on intake and exhaust.