Vibrant 2632 304 SS Concentric Reducer 3 in. to 4 in. OD 4 in. Length Universal

Vehicle Fitment

• Universal - No vehicle-specific fitment. Compatible with any custom exhaust, downpipe, or exhaust system fabrication application requiring a straight concentric reducer from 3 in. O.D. to 4 in. O.D.

Fitment Notes

• Inlet O.D.: 3.00 in. Outlet O.D.: 4.00 in. Confirm both diameters match your tubing before ordering.
• Overall length: 4.00 in. The gradual taper keeps the transition smooth for optimal exhaust flow.
• Part of Vibrant's concentric reducer lineup available in multiple inlet and outlet diameter combinations.
• When welding to stainless steel tubing, 309L filler rod is recommended.

Features

• T304 stainless steel construction provides excellent corrosion resistance and long-term durability in high-heat exhaust applications
• Concentric (co-axial) design keeps the centerline aligned through the transition - eliminates the offset of eccentric reducers
• Smooth, gradual taper over 4 in. minimizes turbulence and flow restriction at the diameter transition
• Consistent wall thickness and dimensional accuracy requires minimal preparation before welding
• Natural stainless finish accepts polishing, coating, or direct weld-in for custom fabrication builds
• Suitable for step-up exhaust transitions in cat-back systems, downpipes, and custom exhaust fabrication
• Part of Vibrant's comprehensive concentric reducer lineup available in multiple size combinations
• Backed by Vibrant's 5-year limited warranty

Specifications

• Part Number: 2632
• Material: T304 Stainless Steel
• Reducer Type: Concentric (Co-Axial)
• Inlet O.D.: 3.00 in.
• Outlet O.D.: 4.00 in.
• Overall Length: 4.00 in.
• Finish: Natural (Uncoated)
• UPC: 690092190279
• Quantity: Sold Individually
• Warranty: 5 Year Limited Warranty

Included Components

• 1x Vibrant 2632 T304 SS Concentric Reducer, 3 in. to 4 in. O.D., 4 in. Length

Product Description

The Vibrant 2632 is a T304 stainless steel concentric (co-axial) exhaust reducer that steps from a 3 in. outside diameter inlet to a 4 in. outside diameter outlet over a 4 in. overall length. The concentric design keeps the inlet and outlet centerlines perfectly aligned through the transition - maintaining symmetrical flow geometry that eccentric (offset) reducers cannot achieve. The gradual 4 in. taper minimizes turbulence and flow restriction at the diameter transition, making it well suited for step-up exhaust connections in downpipes, cat-back systems, and custom exhaust fabrication.

T304 stainless steel is dimensionally consistent and material-composition controlled, requiring minimal surface preparation before welding. The natural stainless finish can be polished or left raw. Part of Vibrant's comprehensive concentric reducer lineup available in multiple inlet and outlet diameter combinations. Sold individually with a 5-year limited warranty.