Exhaust Pipe Expander Tool Kit, 7 Collets 41–108mm

Exhaust pipe expander tool kit expands tailpipes fast for tighter, leak-resistant joints and smoother exhaust flow. This multi-collet flaring tool set covers 41.27–107.95 mm (1-5/8" to 4-1/4") with seven heavy-duty collets for common muffler and tubing sizes. Built from carbon steel and aluminum for repeated high-force use, it’s designed for exhaust installation, repair, and fitting work in both home garages and professional shops.

• Delivers precise pipe expansion to improve fitment for exhaust system installs and repairs


• Fits 41.27–107.95 mm (1-5/8"–4-1/4") pipes with 7 collets for wide size coverage


• Handles low-carbon steel and stainless steel tubing up to 1.5 mm (0.06") wall thickness


• Works with 1/2" or 3/4" impact wrench for faster expansion (lubricate parts before use)


• Includes a rugged storage case to keep components organized and protected in transit

When exhaust connections need a clean, secure overlap, the right pipe stretcher saves time versus cutting and re-welding. Choose the correct collet, clamp the pipe, lubricate, then expand to size for dependable muffler and tailpipe fitment. The hardened steel construction stands up to frequent shop use while the compact case keeps everything together between jobs. Stock your garage now so you’re ready for the next exhaust repair—grab yours today.

• Expansion range (collets): 1-5/8" to 4-1/4" (41.27 mm to 107.95 mm)


• Compatible tubing: low-carbon steel and stainless steel


• Max wall thickness: ≤0.06 in (1.5 mm)


• Main materials: carbon steel + aluminum


• Product dimensions: 14.56 x 10.23 x 3.34 in (370 x 260 x 85 mm)


• Net weight: 9.85 lb (4.47 kg)