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The Shimano GRX ST-RX610 dual control lever delivers light and responsive shifting for mixed-terrain riding (Note: BR1057 is a left non-shift variation for 1x set ups)
from accelerating up steep pitches and taking on technical descents to all-day saddle comfort on even the longest coffee rides
We optimized this airfoil to provide a maximum advantage in clean air at speeds seen from long solo breakaways to full gas World Tour sprints
11t upper and 13t lower pulley wheels
Compound Organic Heat Sink No Backing Plate Material Steel Pad Shape Number 41
Jagwire Locking Bar End Plugs Black CheckoutSpec= ZS56/30 Black The Shimano GRX ST-RX610 dualJagwire Locking Bar End Plugs Black. Jagwire Locking Bar End Plugs safely and securely finish the end of the handlebar. Screw type plugs fit carbon fiber aluminum and steel handlebars with 18 23mm inner diameter Sold as a pair TECH SPECS Color Black Defined Color Black Weight 20
