Key Features & Benefits – Stainless steel exhaust pipe reducer 2.5" to 3.5" (63–89 mm)
Stainless steel exhaust pipe reducer 2.5" to 3.5" (63–89 mm) is intended for OD-to-OD transitions when joining different pipe sizes in exhaust/turbo/intercooler/intake-style piping.
Made from stainless steel with a mirror-polished surface, designed to step from 63 mm to 89 mm OD where a clean transition piece is needed.
When is this useful?
Useful when your setup mixes 2.5" and 3.5" OD sections and you want a straightforward transition part for a clamped or welded joint.
Technical specs
- Type: adapter/reducer
- Size (OD → OD): 63 → 89 mm (2.5" → 3.5")
- Listed length: 138 mm
- Wall thickness (small OD side): 1.05 mm
- Wall thickness (large OD side): 1.0 mm
- Material: stainless steel
- Surface: mirror polished
- Listed application: exhaust / turbo / intercooler / intake piping connections
- Listed tolerance: ±1 mm
- Package quantity: 1 pc
- Part number: EP-BJ63R89
Selection & installation tips
- Measure your piping outside diameter (OD) to confirm you need 63 mm to 89 mm.
- Many components are specified by inside diameter (ID); match OD-to-ID correctly for your joint style.
- Test-fit dry and confirm insertion depth and clearance for the 138 mm length.
- For clamped joints, use correctly sized clamps; for welding, prep edges for full, even contact around the circumference.
- Account for the listed ±1 mm tolerance and base final fitment on real measurements.
Before fitting, self-verify OD sizes (2.5" to 3.5" / 63–89 mm), joint style (OD/ID), and available space for the 138 mm length, then compare them to the specifications listed above.
