The ProPort flows 420 cfm which is enough for 3500 HP and is in a league of its own standing 30mm (1

This kit assumes coilovers

This helps to reduce possibility of damaging the subframe

Big flow and even bigger sound

open end) Recommended for cars with long studs when closed end lug nuts can not be used

JRWS3 Spacers 12,5mm 5x100/112 57,1 57,1 Black (product dedicated for OE wheels) BMW The ProPort flows 420 cfmProduct dedicated for OE wheels only! Wheel CB bevel depth min 5mm! Price per pair; car hub length max: 16mm Type: JRWS3; PCD: 5x100 112; CB: 57,1; Center Lip: 57,1; Thickness: 12. 5mm; Diameter: 149mm; Studs Nuts Pressed: NO; Mounting Bolts Nuts: NO;