shimano sm-bb71 road press fit 86.5mm bottom bracket with inner cover

Complete Ultegra level press-fit bottom bracket assembly for Shimano hollowtech ii road cranks.Features:Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damageSet includes left and right hand cups, inner cover, and inner o-ringsSealed cups keep out dirt and waterMaintenance freeCompatible with 86.5 mm shells41 mm cup diameterEasy press-fit installation