![Integrated Engineering Valve Spring & Titanium Retainer Kit | B5 S4 · C5 A6 | 2.7L Turbo V6 E71 X6 35i 3.0L Turbo I6 [N54] each has an APR logo](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/IntegratedEngineeringValveSpring_TitaniumRetainerKitB5S4_C5A62.7LTurboV6.png?v=1685391187)
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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26
each has an APR logo engraved on the face
the restricted location behind A/C condenser
A un-calibrated torque wrench can lead to under/over torque and rod bolt failure
much faster and stronger shifts taking time directly off the 0-60 and ¼ mile times making the car more reliable and fun to drive
and filter efficiency to support higher power from ECU tunes and turbo upgrades
Integrated Engineering Valve Spring & Titanium Retainer Kit | B5 S4 · C5 A6 | 2.7L Turbo V6 E71 X6 35i 3.0L Turbo I6 [N54] each has an APR logoThis high quality IE valve spring and titanium retainer kit features spring rates optimized to match your vehicle specifications and provide proper valve control preventing valve float in high power and high revving applications. Increasing your engines power output often comes with modifications that require more RPMs to get the most out of it, such as larger turbochargers, tuned intake manifolds, and high output software tunes. Upgrading those
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