Shimano BB-ES300-E Octalink bottom bracket

Product Description Shimano BB-ES300-E bottom bracket - Octalink and E-type compatible The is compatible with E-type front derailleurs. This is the difference between BB-ES300 and BB-ES300-AK. This bottom bracket is used for touring and MTB cranks installed on BSA frames with 68 or 73 mm bottom bracket shell. Specifications:Application:All Mountain, Touring, CityType:BSAShell Width:68 mm, 73 mmAxle Length:113 mm, 118 mm, 121 mm, 126 mmAxle Type:Octalink (MTB)E-Type Compatibility:yesChaincase Compatibility:noTechnical Information:Bearings:steelAxle Material:steelBottom Bracket Cup Material:composite (left), steel (right)Compatibility:Octalink crank arms with eight-speed splines for longer grooves (Octalink MTB)E-type front derailleur Recommended for: FC-T521FC-M523FC-M522FC-M4000FC-M430-8FC-M3000-8Features:hollow constructionTechnology:Octalink In Shimano's Octalink system, the bottom bracket and crank are connected by an 8-tooth contact surface. This provides greater rigidity and greater load capacity, especially compared to conventional square systems. Models:BSA 68x113: Threads:BSAShell Width:68 mmAxle Length:113 mmManufacturer Number:E-BBES300EB13 BSA 68x117: Threads:BSAShell Width:68 mmAxle Length:117 mmManufacturer Number:E-BBES300EB18 BSA 68x121: Threads:BSAShell Width:68 mmAxle Length:121 mmManufacturer Number:E-BBES300EB21 BSA 68x126: Threads:BSAShell Width:68 mmAxle Length:126 mmManufacturer Number:E-BBES300EB26 BSA 73x121: Threads:BSAShell Width:73 mmAxle Length:121 mmManufacturer Number:E-BBES300EC21 BSA 73x126: Threads:BSAShell Width:73 mmAxle Length:126 mmManufacturer Number:E-BBES300EC26Contents:1 x Shimano BB-ES300-E bottom bracketOrder Together:bottom bracket tool TL-UN66 or TL-UN74-S in combination with wrench TL-FC31 Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com