Upgrading to Ferrea valve springs for your BMW S54 engine will ensure proper valve operation

Idle ignition control and adjustable ignition delay compensation

82 A/R with 3" OD (outer diameter) V-Band discharge

and they have proven to be a top performer in both street and racing BMW S62 engines

these rods are an essential upgrade for high-performance turbo or drag racing setups

BMW S65 Forced Induction Build Kit, BMW E90 / E92 / E93 Kit:Level 3 Upgrading to Ferrea valve springsThe 5150 AutoSport Pro Series Forced Induction Build Kit: An all inclusive arsenal of internals custom assembled to prepare your BMW S65 engine for high horsepower, turbocharger or superchargers performance, up to 1,400 HP. A Kit for Every Build and Budget There is no one size fits all, which is why we offer several stages of upgrade. Through careful selection and pairing of components, we are able to offer customers a variety of kit options, catering