Kit spring: SPR-H1000D

The Ferrea Competition Plus Valves are highly regarded as one of the most reliable extreme duty valve kits in the industry

This Cometic MLS Head Gasket is designed to replace BMW part numbers 11121316705

45mm Exhaust   Hot Street  275° Intake / 275° Exhaust   11

These high-performance valve springs are essential for any BMW N54 engine enthusiast aiming for peak power

B58 Gen2 Intake Manifold E24 Kit spring: SPR-H1000DThis in house designed, machined, and welded billet intake manifold from RK Autowerks delivers a performance focused solution for Gen 2 B58 engines operating well above factory power levels. Built in Fort Worth, Texas, it features a significantly upgraded intercooler core and full support for port injection, making it a strong foundation for high boost, high output builds. A matching fuel rail is included; injectors and a port injection line kit are