ersatile Collet Sizes: This exhaust pipe stretcher kit features 7 collet sizes for expanding steel and stainless pipes from 1-5/8" to 4-1/4". Enhanced Exhaust Performance: Expand your tailpipe to boost exhaust volume, leading to higher RPM and increased engine power. User-Friendly Operation: Select the right collet, lubricate the expander, attach sleeves, clamp the pipe, and expand. For winter, warm the pipe to prevent damage. Robust Construction: Made from aerospace-grade 6061 aluminum and tempered 40CR alloy steel, this exhaust pipe expander tool offers rugged rigidity and longevity.
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