{"id":1025,"date":"2020-04-14T16:23:26","date_gmt":"2020-04-14T16:23:26","guid":{"rendered":"https:\/\/www.lofficinabici.com\/produit\/1025\/"},"modified":"2020-09-04T15:20:25","modified_gmt":"2020-09-04T14:20:25","slug":"dura-ace-mechanical-groupset","status":"publish","type":"product","link":"https:\/\/www.lofficinabici.com\/en\/produit\/dura-ace-mechanical-groupset\/","title":{"rendered":"DURA-ACE mechanical groupset"},"content":{"rendered":"<div>The concept behind the new DURA-ACE R9100 is based on the principle that each component should be improved to optimise input and maximise output. In other words, to reduce as far as technically possible energy loss between a rider&#8217;s effort and the actual performance he or she achieves.<\/div>\n<div><\/div>\n<div>That\u2019s why each and every DURA-ACE R9100 component has been developed for maximum effectiveness in combination with the rest of the components in the system. This is Shimano&#8217;s system component concept. The result is a superior system that has truly qualified as having \u2018System Supremacy\u2019.<\/p>\n<p>The new DURA-ACE R9100 adopts Synchronized Shifting, a system that Shimano first developed for mountain bikes. This allows riders to operate both derailleurs just by pressing a single shift button.<\/p>\n<p>The concept of maximising output by minimising energy loss begins with the crankset. The renewed design of the 2&#215;11 HOLLOWTECH II crankset endows the new DURA-ACE groupset with an iconic aesthetic and improves the performance of the gear shift.<\/p><\/div>\n<div>\n<h3>Details:<\/h3>\n<p><strong>Crankset Dura Ace FC-R9100 Hollowtech II:<\/strong><\/p>\n<ul>\n<li>BCD: 110mm, 52\/36 tooth<\/li>\n<li>Cranks: 172.5mm<\/li>\n<li>Manufacturer weight: 621gr<\/li>\n<\/ul>\n<p><strong>Cassette Dura Ace CS-R9100 11 speed:<\/strong><\/p>\n<ul>\n<li>11-25 \/ 11-30 tooth<\/li>\n<li>Material: aluminium spider arm, steel spockets,\u00a05 titanium sprockets<\/li>\n<li>Manufacturer weight: 11-25: 193gr \/ 11-30: 211gr<\/li>\n<\/ul>\n<p><strong>Front derailleur Dura Ace\u00a0<\/strong><strong>FD-R9100<\/strong><strong>:<\/strong><\/p>\n<ul>\n<li>Double, braze-on<\/li>\n<li>2&#215;11 speeds<\/li>\n<li>Manufacturer weight: 70gr<\/li>\n<\/ul>\n<p><strong>Rear derailleur Dura Ace\u00a0<\/strong><strong>RD-R9100<\/strong><strong>:<\/strong><\/p>\n<ul>\n<li>11 speeds<\/li>\n<li>Medium cage<\/li>\n<li>Shadow system<\/li>\n<li>Manufacturer weight: 158gr<\/li>\n<\/ul>\n<p><strong>Levers Dura Ace\u00a0<\/strong><strong>ST-R9100<\/strong><strong>:<\/strong><\/p>\n<ul>\n<li>Customizable position<\/li>\n<li>Carbon levers<\/li>\n<li>New coating material<\/li>\n<li>Manufacturer weight: 365gr \/ pair<\/li>\n<\/ul>\n<p><strong>Brakes Dura Ace BR-R9100:<\/strong><\/p>\n<ul>\n<li>Dual Pivot<\/li>\n<li>Max Tires section: 28mm<\/li>\n<li>Manufacturer weight: 326gr \/ pair<\/li>\n<\/ul>\n<p><strong>Chain Dura Ace CN-HG901-11:<\/strong><\/p>\n<ul>\n<li>Sil-Tec coating<\/li>\n<li>Asymectric construction<\/li>\n<li>Hollow pin<\/li>\n<li>Manufacturer weight: 247gr (114 links)<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The last version of the famous mechanical group from 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