Memorex 100mm (4 Inch) Id Black Air Duct Hose is designed to attach directly to an airbox inlet, plenum, intake tube or mounting plate with a 100mm (4 inch) outside diameter to bring cooler air into the engine. Multiple pieces can be threaded together for longer applications, and with a memory-flex design to help retain position, this easy bending hose is versatile and easy to setup. This kit includes 90cm of ducting and 2 Heavy Duty Clamps. A 76mm (3 Inch) Id version is also available in Black, Blue and Chrome. Part Numbers 8741S, 8746S and 8748S respectively.