Oversize Pulley 17t x 17t ( For Shimano 105, Ultegra and Dura Ace )
Feature: Full Ceramic Pulley Bearing with Carbon Cage
1) Increase power wattage saving.
2) Gear shifting more responsive and improve riding efficiency.
3) Made in lightweight material (carbon cage+7075 aluminium alloy pulley).
4) Enhance smoothness and reduce friction.
Available in CM Bikesports with only RM498!
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