Undaunted MFG 500i Muffler Cover

Aerospace-Grade Performance Exhaust System for STIHL MS 500i

Enhance power and improve engine cooling with this precision-engineered exhaust system designed for the STIHL MS 500i. Made from lightweight 6061 T6 billet aluminum, a high-strength aerospace alloy known for excellent heat dissipation, the one-piece muffler cover optimizes exhaust flow while helping to keep your engine cooler and extend component life.

Proudly manufactured in the USA and backed by a lifetime warranty, this exhaust system delivers lasting durability under demanding conditions.

Includes:

• One-piece muffler cover CNC machined from 6061 T6 billet aluminum

• Spark arrestor screen with aperture size compliant with USFS specifications

• High-Temperature Gasket – Made in the USA

• Longer stainless steel top screws with vibration-resistant Belleville washers

Dyno Proven Performance
Tested on a completely stock saw with no modifications other than the muffler cover. Results showed a 7.93% increase in horsepower, and a 8.25% increase in torque. Performance gains will vary depending on the saw and the level of modification.