2-row 42mm Core (Dual Core) Featuring CSF’s Exclusive B-tube Technology

Weak spark can lead to misfires under load and spark blowout under high boost

and engine reliability compared to traditional batch-fire setups

The Turbosmart TS-1 6870 turbocharger delivers serious power with class-leading transient response in a lightweight

CP-Carrillo rods enhance the S55’s smooth power delivery and high-revving capability by providing exceptional strength without adding unnecessary weight

BMW N53 Valve Springs by SuperTech Seat Pressure:88 lbs 2-row 42mm Core (Dual Core)Designed to meet the demands of high performance applications, Supertech valve spring kits are favored by performance enthusiasts, engine builders, and professional racing teams alike. These kits are compatible with various N53 applications, including racing and performance street builds, delivering optimal performance at high RPMs. Crafted from high quality materials, Supertech valve springs are built to withstand the intense conditions of high