Stihl MS271 / MS291 Performance Exhaust – CNC-Machined in the USA. FitsStihl MS271 and MS291 (all carbureted models). 1x MS271 / MS291 Performance Exhaust. Aerospace-Grade Construction – CNC machined from 6061-T6 billet aluminum, a high-strength alloy that dissipates heat faster than steel for cooler operation and longer life.
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