"Kogel's latest round of anodized alloy pulley wheels come in 14-tooth sizes to fit the latest round of Shimano wireless derailleurs. And they come in six colors, letting you cage a little bling while gaining watts. Fitted with Kogel's Cross Seals to keep grit and dust out, they're available hybrid ceramic bearings - meaning, ceramic balls with a hardened steel race."
"Kogel does offer some pulleys with full ceramic bearings, just not these. Yet. The pulleys themselves are cut from 7075 aluminum, which last longer than the stock plastic pulleys. Kogel says they don't affect chain wear. They're compatible with all of Shimano's new wireless Di2 12-speed MTB and gravel derailleurs, including XTR, XT, Deore, and GRX. MSRP is $224.99 for the pair, available in black, blue, red, gold, raw, and purple."
Kogel released 14-tooth anodized alloy pulley wheels designed for Shimano wireless Di2 12-speed MTB and gravel derailleurs, including XTR, XT, Deore, and GRX. The pulleys are machined from 7075 aluminum to outlast stock plastic options and are fitted with Cross Seals to keep grit and dust out. Bearings are hybrid ceramic, using ceramic balls with a hardened steel race, while full ceramic options exist elsewhere in the lineup. Kogel states the pulleys do not affect chain wear. The pair lists for $224.99 and is offered in six colors: black, blue, red, gold, raw, and purple.
Read at Bikerumor
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