THIS IS FOR MS271 44.7MM BUT WILL FIT ON YOUR MS291 YOU WILL JUST BE DOWNGRADING FROM 47MM TO 44.7MM. The item "FOR STIHL CHAINSAW MS271 MS291 PISTON & CYLINDER # 1141 020 1203 44.7MM" is in sale since Wednesday, May 16, 2018. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Chainsaw Parts & Accs". The seller is "customchainsawparts" and is located in Arlington, Washington. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Barbados, Bermuda, Brunei darussalam, Bolivia, Guadeloupe, Iceland, Jordan, Cambodia, Cayman islands, Liechtenstein, Luxembourg, Monaco, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian federation.