ENDURO BKCJ-0340 11T Ceramic Derailleur Pulleys for Shimano Dura Ace & Ultegra – Red

Upgrade your drivetrain performance with the ENDURO BKCJ-0340 Ceramic Derailleur Pulley Set, specially designed for Shimano Dura Ace 9000 Series and Ultegra 8000 Series 11-speed rear derailleurs. Built using precision-machined Delrin pulley wheels and premium XD-15 Ceramic Hybrid Bearings, this pulley set delivers smoother shifting, lower drivetrain friction, and improved efficiency during every ride. The lightweight construction helps reduce rotational resistance while maintaining excellent durability for road cycling performance. Its striking red finish also adds a premium custom look to your bike setup. Designed with a 5mm bolt hole for accurate compatibility, these pulley wheels are ideal for riders looking to enhance drivetrain smoothness, reliability, and long-term performance. Whether you ride competitively or train regularly, this upgrade offers noticeable drivetrain refinement and efficient power transfer.

Key Features

• Brand: Enduro Bearings

• Model: BKCJ-0340

• Compatibility: Shimano Dura Ace 9000 Series & Ultegra 8000 Series

• Speed Compatibility: 11-Speed Drivetrain

• Pulley Size: 11 Tooth

• Bearing Type: XD-15 Ceramic Hybrid Bearings

• Material: Precision Machined Delrin

• Bolt Hole Size: 5mm

• Color: Red

• Performance Benefit: Reduced drivetrain friction and smoother shifting

• Design: Lightweight and high-efficiency pulley construction

• Application: Road cycling drivetrain upgrade

Product Specifications

• Product Type: Derailleur Pulley Set

• Discipline: Road Cycling

• Bearing Technology: Ceramic Hybrid

• Pulley Teeth Count: 11T

• Material Construction: Delrin Composite

• Mounting Compatibility: 5mm Bolt Mount

• Drivetrain Compatibility: Shimano 11-Speed

• Intended Use: Performance drivetrain optimization

Bearing Performance & Efficiency

The XD-15 Ceramic Hybrid Bearings used in this pulley set are engineered for exceptional rolling efficiency and long-lasting durability. Ceramic hybrid technology helps minimize resistance inside the drivetrain, allowing smoother chain movement and improved power transfer during high-speed riding. The precision bearing design also improves shifting consistency under load, making it an excellent choice for performance-focused cyclists. Combined with lightweight Delrin pulley wheels, this setup offers a balance of low weight, quiet operation, and dependable durability for everyday training and competitive road riding.

Easy Operation / Usage

• Remove the existing derailleur pulley wheels from the rear derailleur cage

• Install the ENDURO pulley wheels using compatible 5mm hardware

• Ensure proper upper and lower pulley positioning during installation

• Tighten bolts to the manufacturer’s recommended torque settings

• Check drivetrain alignment and shifting performance before riding

Why Choose This Product

• Premium ceramic hybrid bearing technology for smoother performance

• Lightweight Delrin pulley construction improves drivetrain efficiency

• Designed specifically for Shimano Dura Ace and Ultegra systems

• Helps reduce drivetrain friction and mechanical resistance

• Provides smoother and quieter shifting performance

• Durable construction suitable for regular road cycling use

• Adds a premium custom appearance to your bike drivetrain

In the Box

• 1 x ENDURO BKCJ-0340 Upper Derailleur Pulley

• 1 x ENDURO BKCJ-0340 Lower Derailleur Pulley