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and most other chainsaw brands
this optional upgrade installs directly within your existing Undaunted Manufacturing exhaust system with no modifications required
Lower Support Bracket CNC machined from 6061 T6 billet aluminum
• Stihl Part Number 1140-020-1212
Aerospace-Grade Performance Exhaust System for Husqvarna 372
309 Machine HP261C CNC Ported Cylinder Kit model_echo_2511 and most other chainsaw brandsWake up your saw with precision CNC porting from 309 Machine. Our focus is simple: maximize power while maintaining the reliability and durability professionals expect. The HP261C Cylinder Kit represents the ideal balance of high performance and longevity, delivering increased torque and horsepower along with improved throttle response and cutting performance. Important NoteThis cylinder kit fits later production MS261 saws only. Compatible with saws
