Silicone Straight Reducer - 3.5" to 4" Black | Proflow Air Intake Hose | PFES201-350-400B

Premium 3.5" to 4" Silicone Straight Reducer for High-Performance Air Intake Systems

The Proflow PFES201-350-400B is a heavy-duty silicone reducer designed for demanding automotive applications. Built from 4-layer, 5mm polyester-reinforced silicone, this straight reducer delivers superior heat resistance, flexibility, and durability for turbo, intercooler, and intake piping.

Key Features:

• 3.5-inch to 4-inch reducer – transitions between different pipe diameters (89mm to 102mm)
• Straight design – ideal for direct diameter transitions without bends
• 4-layer reinforced silicone – 5mm wall thickness for maximum strength
• Extreme temperature range – withstands -40°C to 200°C
• Black finish – clean, professional appearance under the bonnet
• Pressure resistant – prevents collapse under vacuum or boost

Applications:

Perfect for turbo inlet/outlet transitions, intercooler piping, cold air intakes, and custom intake manifolds. Suitable for street, track, and race builds requiring stepped diameter connections.

Australian stock – fast dispatch from our Perth warehouse.