To celebrate 50 years of innovation, the 50th Anniversary Edition of the MS 271 FARM BOSS® is a mighty boss of a chainsaw with a unique, patriotic design. Loaded with features and technology, the FARM BOSS® starts with a highly efficient engine that delivers 20% longer run times between refuelings—while cutting exhaust emissions in half compared to the previous model. The pre-separation air filtration system is extraordinarily effective. Your air filter can last up to five times longer. All this STIHL engineering in one compact, ergonomic design—now that’s high performance.