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Description of Shimano Pressfit 86 Road Bottom Bracket Cups SM-BB71-41B
High-quality Pressfit bottom bracket cups at Ultegra-level. The new bottom bracket design features low overall weight, low Q-factor and increased heel clearance. Easy to install, increased durability because of the larger bearing size. Pressfit 86 bottom bracket cups can be used with specific frames (bottom bracket size 86,5x41mm) for this new oversize BB standard only. All Shimano Hollowtech-II road cranksets with integrated 24mm spindle are compatible with this bottom bracket.