Kogel Bearings Narrow-Wide Pulleys w/ Road Seals (Blue) (12T) (For Shimano 11 Speed)

Kogel Bearings Narrow-Wide Pulleys w/ Road Seals (Blue) (12T)
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Price: $139.99 (Save 39%)
Sale: $85.72
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Royal Blue was a color reserved for athletes sponsored by Kogel Bearings, but now it is available to us mere mortals. The narrow-wide tooth profile on the top pulley helps to retain shifting accuracy by pushing every link of the chain. The quality of the ABEC 5 full ceramic bearings is Grade 3, one of the best. Grade 3 means that the ball has a 3/1,000,000” tolerance of sphericity which means it is extremely round, which means less friction and that the Grade 3 balls roll a longer duration than others. 

Fits: Dura Ace 9100, Ultegra & 105 11 Speed
Bearings: Grade 3, ABEC 5 Hybrid Ceramic Bearings 

Note: These pulleys are for road use only