Shimano bb m815 saint 83 mm hollowtech ii bottom bracket set
Genuine shimano hollowtech ii bottom bracket assembly length of screw thread is increased to enable the fitment of chain devices set includes left and right hand cups spacer inner cover and inner o rings light weight seal structure helps to remove vital grams sealed cups keep out dirt and water maintenance free compatible with 83 mm shells durable gold anodised finish easy installationenglish thread