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Adjustable pad clearance for easy set up
The SHIMANO GRX DI2 DUAL CONTROL LEVER delivers light and responsive shifting for mixed-terrain riding
Features Spindle Thread: 9/16"
ease of use and improved power transfer
DURA-ACE proven 4-arm design: Same stiffness and lighter weight
Shimano BB-7710 Bottom Bracket 68 x 109.5mm Dura Ace Track Size:68X109.5 Adjustable pad clearance for easyFeatures Octalink Compared the power transfer of OCTALINK with the conventional square taper spindle, the 8 splined OCTALINK interface that connects bottom bracket and crank set increases the strength and rigidity for entire assembly. SPECIFICATIONS Model No BB 7710 Series DURA ACE TRACK 7710 Average Weight 244 g Remarks For track Compatibility Track Octalink splined system.