Shimano SM-BB52 Hollowtech Threaded Bottom Bracket 68/73 Shell Width Kids A pair of Graphene-infused compounds

A pair of Graphene-infused compounds in a targeted array across the tire to reduce rolling resistance

Fully foldable EAZZY H series offer convenient mounting

Size: S/M 54-58cm

Labyrinth & Contact Sealing

Shimano SM-BB52 Hollowtech Threaded Bottom Bracket 68/73 Shell Width Kids A pair of Graphene-infused compoundsSHIMANO Threaded Bottom Bracket 68 73 mm shell width SM BB52 SHIMANO Bottom Bracket Threaded HOLLOWTECH II 68 73 mm shell width With better sealing and rotation the SHIMANO DEORE bottom bracket delivers high driving efficiency. FEATURES Better sealing performance PRODUCT SPECIFICATIONS MODEL NO SM BB52 SERIES DEORE M610 Series HOLLOWTECH II bottom bracket_Threaded bottom bracket type Threaded bottom bracket shell width (mm)_68 Threaded bottom bracket