Shimano BB-UN300 Bottom Bracket - English 68 x 117.5mm Spindle Square Taper JIS Model=Chainring for GRX FC-RX600 Mounting screws included

Mounting screws included

The large volume casing provides extra damping and comfort

Color Black Ring Position/Type Outer Tooth Count 50 Drivetrain Speeds 10 Drivetrain Speeds 11 Chainring BCD 110 FSA ABS Material Aluminum Defined Color Black

Model Reaver Size 700c Width 45mm Casing EXO TPI 120 Compound HYPR-X Bead Folding Type Tubeless Color Black/Tanwall Weight 500g

Shimano BB-UN300 Bottom Bracket - English 68 x 117.5mm Spindle Square Taper JIS Model=Chainring for GRX FC-RX600 Mounting screws includedShimano BB UN300 Bottom Bracket English 68 x 117. 5mm Spindle Square Taper JIS. Shimano BB UN300 Square Spindle Bottom BracketsFits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle TECH SPECS Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 68 Spindle Interface Type Square Taper JIS Spindle Length 117. 5 Defined Color Black