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SHIMANO's SM-JC41 Junction B is the central connector for DI2 systems
HYDROILO lens treatment repels water
Other computer mount inserts are available separately
the mountain bike needs something that can take lots of dust
Shimano GRX Di2 Shifters with Flat Mount Calipers (ST-RX815 + BR-RX810) gsforcee1 SHIMANO's SM-JC41 Junction B isThe Shimano GRX Di2 Dual Control Lever delivers light and responsive shifting for mixed terrain riding. The ergonomic shifter design improves comfort, and the textured, anti slip brake lever increases control on bumpy terrain. This Di2 version, the ST RX815 Shifters with BR RX810 Flat Mount Calipers, offers the digital precision of Shimano electronic shifting and synchronized shifting. Specifications Raised hood head prevents hand misalignment and
