Shimano GRX RD-RX400 Rear Derailleur - 10-Speed Long Cage Black With Clutch MFPN=21146 5 Tire Type Tubeless Ready

5 Tire Type Tubeless Ready Clincher

Improved base to increase stability

Two bolt steerer clamp

} Tube / gear storage with hook-and-loop strap

Minimum Head Tube to Seat Post Measurement: 20"

Shimano GRX RD-RX400 Rear Derailleur - 10-Speed Long Cage Black With Clutch MFPN=21146 5 Tire Type Tubeless ReadyShimano GRX RD RX400 Rear Derailleur 10 Speed Long Cage Black With Clutch. GRX RD RX400 Rear DerailleurA Shadow RD+ chain stabilizer prevents chain slapping and drops The gravel tuned clutch tension helps to provide smooth and reliable mixed surface shifting Stabilizer can be turned on off to match terrain Compatible only with 10 speed ST RX400 ST 4700 ST4720 ST 4725 ST RS405 and SL 4700 shift levers TECH SPECS Largest Cog 36 Color Black Rear Der