309 Machine HP661C CNC Ported Cylinder Kit model_stihl_461/460/440/046/044 More pliable flange material makes

More pliable flange material makes filter easier to clean and oil

Whether you're building a complete custom saw or simply replacing a worn factory top cover

*Base gasket must be reused or replaced

Aerospace Grade Performance Exhaust System for the new STIHL MS 400

the one piece muffler cover optimizes exhaust flow while helping to keep your engine cooler and extend component life

309 Machine HP661C CNC Ported Cylinder Kit model_stihl_461/460/440/046/044 More pliable flange material makesWake 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 HP661C Cylinder Kit represents the ideal balance of high performance and longevity, delivering increased torque and horsepower along with improved throttle response and cutting performance. Whats Included Brand new OEM Stihl Cylinder Kit Stihl Part Number 1144 020 1202 OEM cylinder