Shimano GRX 11 speed FC-RX810 CrankFor gravel, road and cyclocross use: Shimano GRX 1x11 speed FC RX810 Crank All versions feature a 2. 5mm wider chain line that gives more space in the frame design and wider tyres. GRX 1 speed cranks minimize the complexity of shifting only at the rear of the cassette (optional RX800 600 40T cassettes or RX800 42T cassettes), and are equipped with chainrings with SHIMANO's DYNAMIC CHAIN ENGAGEMENT+ toothed treads that provide optimal chain retention

Top-Performance

Remarks: *w/o Bracket spec

SERIES                     : SHIMANO 105 5800 Series

Sleek aesthetic

Various crank arm lengths and chainrings with 50-34 or 52-36 teeth also offer variability and an optimal gear ratio for almost every riding situation

Color carbon fiber composite material

COLOR:  Tan Wall

Compatible chain                            : HG-X11

Model: RD-M3100-SGS

And the platform surface on the flat pedal side has a non-slip grip and is concave for long ride comfort and pedaling efficiency

Internal bumper stop for silent lever return

• Arc legs fit the ear contour closely