Chainrings have plenty of life left and the power meter works great. Let me know if you have any questions or concerns. The item "Shimano Dura Ace 9000 53/39 Pioneer ANT+ Double Sided Power Meter 175 Crankset" is in sale since Sunday, June 3, 2018. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Cranksets".The seller is "alefbikes" and is located in Santa Clara, California. 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, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Croatia, Malaysia.