Shimano Tiagra ST-4720/BR-4770 Mechanical Shift/Hydraulic Brake Lever Caliper - Rear Flat Mount Finned Resin Pads BLK Weight-327g These bearings feature nitrogen infused

These bearings feature nitrogen infused stainless steel races that will not rust or corrode paired with Silicon Nitride ceramic balls

Pins are secured with captive locknuts for ultimate durability

28H front / 28H rear

or 49mm lower head tube inner diameter

} Rear Shock Tune Assembly - Compression/Rebound/Lock(Includes Shims For Compression

Shimano Tiagra ST-4720/BR-4770 Mechanical Shift/Hydraulic Brake Lever Caliper - Rear Flat Mount Finned Resin Pads BLK Weight-327g These bearings feature nitrogen infusedThe Shimano Tiagra ST 4720 hydraulic shift brake lever brings the all condition confidence and refined ergonomics of hydraulic disc brakes to the quick and intuitive shifting cyclists expect from Shimano Tiagra. 2x10 speed Brake Lever Actuation Hydraulic Rotor Included No Brake Caliper Mount Flat Mount Brake Lever Use Right Rear Der Shifter Compatibility Shimano Road Drivetrain Speeds 10 Color Black Hydraulic Fluid Type Mineral Oil Pad Compound Resin