1. ±4mm Adjustable flanges for stroker or narrower engines.
2. Sport muffler for engine up to 125 HP.
3. SuperFlow muffler for engine up to 150HP.
4. 100% #304 stainless steel muffler, tail pipes and headers.
5. Build in M18x1.5 nuts for connecting O2 sensor when tuning.
6. Fiberglass fire sleeve on #2 and #4 header pipes were designed to protect fresh air hoses.
7. Require none injection heat exchanger or J pipe.
8. Use original 111 298 051A gasket for heater box. 111 298 051A gasket sold separately.
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