Shimano Claris RD-R2000-GS Rear Derailleur - Medium Cage - 8-speed Brand_Reid Caledonia uses a standard round

Caledonia uses a standard round bar

Bikevo and many more

SHIMANO SLX - Rear FREEHUB - MICRO SPLINE - CENTER LOCK - Disc Brake - 148x12 mm E-THRU Axle - 12-speed

specific version for 1

Shimano Claris RD-R2000-GS Rear Derailleur - Medium Cage - 8-speed Brand_Reid Caledonia uses a standard roundSHIMANO CLARIS Medium Cage Rear Derailleur 8 speed RD R2000 GS SHIMANO CLARIS Rear Derailleur Medium Cage 8 speed With light action and smooth gear transitions, the SHIMANO CLARIS derailleur is compatible with 8 speed road drivetrains. PRODUCT SPECIFICATIONS MODEL NO RD R2000 GS SERIES CLARIS R2000 Series Color Series color Compatible chain HG 8 7 6 speed Total capacity 43T Cable adjuster Mount_Direct attachment (Conventional) Low sprocket_Max. 34T