With ARP Connecting Rod Bolts Included

The FPD-R (Fuel Pulse Damper-Range) and FPD-XR (Fuel Pulse Damper-Extra Range) both have unique base "static" fuel pressure requirements:FPD-R base pressure requirement = 40 - 70psi (static)FPD-XR base pressure requirement = 40 - 105psi (static)Base pressure is the fuel pressure measured when the fuel pump is running WITHOUT a vacuum line connected to the regulator

Chromoly 108mm inner CV with aerospace-grade internals

170″ tube with (2) 108mm CVs to mount to the differential

Powerflex Polyurethane Suspension Bushings, BMW E46 Non-M Diagram Reference - Bushing Type:1 - Front Control Arm Bushing - 66 mm - Street With ARP Connecting Rod BoltsPowerflex Upgraded Polyurethane Suspension Bushings for BMW E46 Non M 3 Series Models. Over time, OEM rubber bushings wear from constant movement, heat, and exposure to road debris. This wear and tear can lead to increased play in the suspension components, affecting handling performance and ride quality. Symptoms of worn bushings include increased body roll during cornering, excessive vibration and noise over bumps, and less precise steering feel.