Estimated Availability: October 10, 2025
This item is currently in production. Thank you for your patience and continued support.
Aerospace-Grade Performance Exhaust System for the new STIHL MS 400.1
Experience unmatched power and superior engine cooling with our precision-engineered exhaust system, crafted from aerospace-grade materials built to withstand the most demanding conditions. Proudly manufactured in the USA and backed by a lifetime warranty, this exhaust delivers reliability and durability you can trust.
Premium Features:
· CNC machined from 6061 T6 billet aluminum, a high-strength aerospace alloy that dissipates heat significantly faster than steel, enhancing engine cooling and prolonging component life
· Includes muffler cover and longer stainless steel top screws for improved durability
· Equipped with a replaceable, USFS-approved stainless steel spark arrestor
· Features a bi-directional exhaust outlet, allowing you to position the opening toward either the guide bar or the recoil side for optimal flexibility and performance
Dyno Proven Performance
Tested on a completely stock saw with no modifications other than the muffler cover. Results showed a 7.82% increase in horsepower and a 6.5% increase in torque.
Performance gains will vary depending on the saw and the level of modification.
Installation Notes:
· Post-installation tuning or recalibration is necessary to optimize performance
· Apply Loctite 243 thread locker on all mounting screws to ensure secure, vibration-resistant assembly
Lifetime warranty covers defects in materials and workmanship under normal use. Exclusions apply for misuse, neglect, or unauthorized modifications.
All pricing is listed in US dollars.
Estimated Availability: October 10, 2025
This item is currently in production. Thank you for your patience and continued support.
Aerospace-Grade Performance Exhaust System for the new STIHL MS 400.1
Experience unmatched power and superior engine cooling with our precision-engineered exhaust system, crafted from aerospace-grade materials built to withstand the most demanding conditions. Proudly manufactured in the USA and backed by a lifetime warranty, this exhaust delivers reliability and durability you can trust.
Premium Features:
· CNC machined from 6061 T6 billet aluminum, a high-strength aerospace alloy that dissipates heat significantly faster than steel, enhancing engine cooling and prolonging component life
· Includes muffler cover and longer stainless steel top screws for improved durability
· Equipped with a replaceable, USFS-approved stainless steel spark arrestor
· Features a bi-directional exhaust outlet, allowing you to position the opening toward either the guide bar or the recoil side for optimal flexibility and performance
Dyno Proven Performance
Tested on a completely stock saw with no modifications other than the muffler cover. Results showed a 7.82% increase in horsepower and a 6.5% increase in torque.
Performance gains will vary depending on the saw and the level of modification.
Installation Notes:
· Post-installation tuning or recalibration is necessary to optimize performance
· Apply Loctite 243 thread locker on all mounting screws to ensure secure, vibration-resistant assembly
Lifetime warranty covers defects in materials and workmanship under normal use. Exclusions apply for misuse, neglect, or unauthorized modifications.
All pricing is listed in US dollars.
