Spring 13in Rear 5in OD Midpipes 'Dinan's high flow intake system

'Dinan's high flow intake system for the 550i dramatically increases intake air-flow volume and velocity as well as ensuring the lowest possible intake air temperatures for maximum power gains

5 in ID - 12 in Length - 150 lb/in Spring Rate - Steel - Red Powder Coat - Each

Exhaust Wrap - 2 in Wide - 25 ft Roll - Stainless Locking Ties - Woven Fiberglass - Black - Each

Hose and Wire Sleeve - Fire Sleeve - 3/8 in ID - 25 ft - 16 in Fire Tape Included - Silicone / Fiberglass - Black - Each

Direct replacement for the factory intake silencer

Spring 13in Rear 5in OD Midpipes 'Dinan's high flow intake systemCoil Spring Conventional 5 in OD 13 in Length 250 lb in Spring Rate Rear Steel Red Powder Coat Each