19. Coilover Spring Preload Collar (Shock Spring Adjustment Nut)

Suspension preload collar (adjustment nut), engineered for precise ride-height tuning in high-performance coilover shock assemblies. + Features a heavy-duty hexagonal profile integrated with a precise centering lip to locate and support the suspension coil spring. + Comprehensive edge blends (fillets) are applied around the transition from the hex body to the centering lip, mitigating shear stress concentrations caused by the constant compressive force of the spring.