Jockey Wheels set 13T-13T for Shimano 12-speed rear derailleur MTB

Basic price 60

Clear Variable

Milled derailleur Pulley Wheels in the original ALUGEAR “Spider” look.



  • Number of teeth: bottom pulley – 13T; top pulley – 13T

  • Bearing: steel, both sides sealed, “ENDURObearings”, Abec 3, 6x17x6

  • Weight: 20g (set weight)

  • Material: 7075-T6 aluminum

  • Made: CNC milling

  • Surface coating: Anodizing



  • Jockey Wheels for Shimano MTB rear derailleurs RD-M6100, RD-M7100/M7120, RD-M8100/M8120, RD-M9100/M9120 with standard 12-speed long and medium cages.

  • MTB Pulleys you may use the following chains: 12sp Shimano, 12sp SRAM Eagle chains.



ALUGEAR rear derailleur pulleys are CNC machined from 7075-T6 aluminum and hard coat industrially anodized to provide protection from mechanical impacts, a good look, and an excellent tactile feel to each of the pulleys that lasts a long time.

Made of lightweight aluminum and provided with high-quality bearings from Germany.

In addition, easily running and sealed bearings save the watts of power in the long ride.

The pulley wheels in many anodized colors are a perfect visual part, can refresh your rear derailleur and they add a stylish look on every bike.

A unique tooth profile of pulleys eliminates chain noise, reduces wear, and provides smooth operation on the entire drive system.

The tooth profile is specially designed for use with MTB chains.

ALUGEAR pulleys are the best choice if you are looking for a technologically sound pulley with a unique design and low weight.



  • It is also a good idea to use a new chain with your new ALUGEAR pulleys.


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