Jockey Wheels x2 13T Shimano 12sp Compatible - Sealed CERAMIC Bearings

? EJ's CNC Machined 13T Jockey Wheels – Shimano 12 Speed x 2 ?

High Strength Aluminium Alloy | Ceramic Bearings

Upgrade your drivetrain with EJ's derailleur jockey wheels, precision-engineered specifically for Shimano 12-speed 13T/13T systems. These jockey wheels deliver crisp shifting, durability, and smooth performance in the harshest riding conditions.

Key Features

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  CNC Machined  from high-strength Aluminium Alloy

  
  


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  Designed specifically for Shimano 12-speed 13T / 13T setups

  
  


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  Precision tooth profile keeps the chain securely in place for accurate, crisp shifting

  
  


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  Ceramic sealed bearings for ultra-smooth running and reduced drag



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  Double seal for added protection against dirt, water, and debris

?? Note: Stainless steel bearings are not used, as they are softer than bearing steel and wear out faster under load. Visible rust indicates contamination—any bearing will fail regardless of material.

What’s Included

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  2 × 13T jockey wheels (top & bottom)

Technical Specifications

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  Material: Aluminium Alloy

  
  


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  Bearings: Ceramic (sealed)

  
  


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  Compatibility: Shimano 12-speed rear derailleurs (13T / 13T setup)

  
  


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  Chain Compatibility: 12-speed

  
  


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  Teeth: 13T (upper) / 13T (lower)



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  Weight: 38g (pair)

  
  

Compatibility

? Compatible with Shimano 12-speed rear derailleurs designed for a 13T / 13T jockey wheel configuration