Shimano Bottom Bracket ES300 Octalink 121mm

Now $40.00 RRP $44.99 SAVE $4.99
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The Shimano ES300 bottom bracket is made to be used in conjunction with Shimano Octalink chainsets. The Octalink splined axle/crank arm interface creates a more rigid crank assembly compared to square tapered spindle.


  • Two options available, 2-PIECE CRANKSET construction (T4060) and OCTALINK (T4010)
  • 44-32-22T/48-36-26T spec available
  • Smooth and precise shifting performance with HYPERDRIVE technology
  • Quiet shifting operation by reduction of driving noise (48T)
  • Chain case compatible
  • With or without chain guard
  • ALIVIO logo (T4060), SHIMANO logo (T4010)
  • Better sealing performance (SM-BB52)
  • Color options: Black, Silver
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Shimano is the world's largest manufactuer of bicycle components, with headquarters in Sakai, Japan. While Shimano are famous for the drivetrains and components, they also produce a wide range of shoes, pedals, wheels, and clothing. Recently Shimano has lead the market in the introduction of electronic shifting technology (Di2) to its road groupsets. Shimano's high end groupsets (Dura Ace and XTR) have been ridden to victory in the world's most famous on and off road races, including the Tour de France.

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