Two Red anodised 13t jockey (pulley) wheels to fit Shimano 13t specific derailleurs or for use on time-trial bikes where larger wheels are desireable.(Please check for correct fitment before purchase)
Standard wheels often wear out before the derailleur does reducing shifting quality - replace them and revive your derailleur.
These wheels help to improve drivetrain performance in the following ways:
- Ventilated design drives out mud and debris - a must in the UK or offroad.
- Aluminium construction is more durable than standard plastic wheels.
- Ceramic bearings offer low-drag long life performance.
Each wheel weighs 9g on our scales.
