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Shimano Acera BB-ES300-AK Octalink Bottom Bracket

EBBES300AKB21
₹1,520
Size

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Durable and Efficient Octalink Bottom Bracket

Overview

The Shimano Acera BB-ES300-AK Octalink bottom bracket is engineered for optimal stiffness and lightweight performance. Its design ensures efficient power transfer, making it a reliable choice for riders seeking enhanced pedaling efficiency.

Durable and Robust Design: Featuring a reinforced spline construction, the BB-ES300-AK offers improved durability and stability. This robust design ensures long-lasting performance, even in demanding cycling conditions.

Quick and Precise Assembly: With its Octalink system, the bottom bracket provides a quick and precise assembly process. This design simplifies installation while ensuring a secure fit with compatible cranksets for consistent performance.

Enhanced Chain Line Control: The BB-ES300-AK includes a chain stabilizer, which promotes better chain line control. This feature enhances drivetrain efficiency and reduces chain noise for a smoother ride.

With a 121 mm axle length and 68 mm shell width, the Shimano Acera BB-ES300-AK is an excellent option for cyclists looking for a durable and efficient bottom bracket for various riding styles.

Features
  • Enhanced Power Transfer: Lightweight and stiff design ensures efficient power delivery for smoother pedaling.
  • Reinforced Durability: Spline-reinforced construction increases stability and extends lifespan under demanding conditions.
  • Improved Assembly: Octalink interface simplifies installation while ensuring a secure and precise fit.
  • Chain Line Optimization: Includes a chain stabilizer for better chain line control and reduced drivetrain noise.
  • Weight Advantage: 26g lighter than the BB-ES25 model for improved performance.

Technology

  • Octalink Technology: Utilizes Shimano's 8-tooth contact surface between the bottom bracket and crank for enhanced rigidity and greater load capacity compared to conventional square systems.

Specifications
  • Model No: BB-ES300-AK
  • Series: Shimano Alivio T4000 Series
  • Structure|For Chain Case: Yes
  • Axle Length/Shell Width (mm)|121|68 (BC1.37): Yes (w/ 1.8 mm spacer version available for FC-M521)
  • Spindle|Hollow Pipe: Yes
  • Spindle|Octalink: Yes

Shipping, Returns & Refunds

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.

Shimano Warranty Information