Shimano SM-BB52 Hollowtech Threaded Bottom Bracket 68/73 Shell Width Kids we recommend inflating tubulars to

we recommend inflating tubulars to their max pressure and allowing some time before riding: adhesion reaches 80% of its maximum strength after 8 hours

Better puncture resistance while retaining the superb balance of a light riding feel and grip

CEX - coiled steel housing with non-lubed liner

Labyrinth & Contact Sealing

ULTEGRA R8000 Series

Shimano SM-BB52 Hollowtech Threaded Bottom Bracket 68/73 Shell Width Kids we recommend inflating tubulars toSHIMANO 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