Collection: Straight Silicone Reducers - Proflow & Aeroflow

Browse black straight silicone reducers from Proflow and Aeroflow for joining different pipe diameters in custom intake and intercooler pipework. This collection contains straight reducers, rather than 45-degree or 90-degree elbow reducers.

Match both connection sizes

The listed diameter combinations include 1.50 to 2.00 inch, 2.00 to 3.00 inch, 3.00 to 4.00 inch and 4.00 to 5.00 inch, alongside other intermediate combinations. An Aeroflow 45mm to 38mm reducer is also listed. Check the individual product for the exact pair of sizes and part number.

Choosing a straight silicone reducer

Match the specified internal diameter at each end to the outside diameter of the pipe it connects to. Check overall length, available clearance and the space needed for clamp engagement before ordering. Choose clamps to suit each end's hose outside diameter.

Construction, length and finish are product-specific. Confirm the manufacturer's operating temperature, working pressure and fluid compatibility for the exact part; a burst-pressure figure is not a working-pressure rating. Do not assume all reducers share the same specifications.

The Aeroflow AF9201-175-150 listing states that it is not recommended for oil or fuel. For any reducer, confirm suitability for the intended fluid and operating conditions, including heating or cooling applications.