This will ensure that the gasket is properly seated and compressed

25mm Exhaust   Hot Street  311° Intake / 305° Exhaust   11

professional builders

broader torque delivery

50mm Exhaust   Rally / Race  301° Intake / 293° Exhaust   12

BMW M40 / M42 / M43 / M44 Valves by Ferrea Options:Triple Groove - 34mm Intake / 31.5mm Exhaust This will ensure that theThe Ferrea Competition Plus Valves are highly regarded as one of the most reliable extreme duty valve kits in the industry. Specifically designed for the classic BMW M40, M42, M43, and M44 engines, these valves are crafted with performance in mind, using aerospace grade alloys such as EV8 Z18 for maximum tensile strength. Ferreas unique two step slow forging process ensures superior grain flow, enhancing the structural integrity of each valve. A 48