Shimano GRX RD-RX812GRX 11 speed rear derailleur for 1X cranks Adjustable chain stabilizer prevents chain slapping and drops Gravel tuned clutch tension can be toggled ON OFF to match the terrain Low sprocket: Max. 42T Min. 40T Top sprocket: 11T Attributes Max Front Difference Single chainring only Maximum Cog 42T Minimum Cog 11T Primary Color Grey Cage GS RD Capacity 31T RD Spring Type Shadow Plus RD Weight 267g Speed 11 Mount Standard

Gravel Tires (the narrowest recommended tyre size is 38mm wide)

Li-ion rechargeable battery

FRONT HUB: Sealed bearings

like the name

Stay organized and comfortable on your next adventure with this pannier

The PRS-30LB does not include legs or a base plate

- Total Capacity: 39T (RD-R42) / 33T (RD-R42S)

designed with 7mm full investment casted heat-treated hollow dropouts for weight reduction and durability

M 55–59 cm

no modifications needed

Shimano J-Type disc brake pads deliver superior cooling performance with Ice Technologies fins and aluminum backplate

smaller size