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The Shimano Altus rear derailleur features an advanced light-action, long-cage design with Teflon-coated bushings. What sets the Shimano Altus derailleur apart from other rear derailleurs is its unique 13 tooth upper and 15 tooth lower pulleys that provide a 43 teeth chain wrap capacity (more than conventional 11 tooth pulleys) and enable them to rotate with less friction.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.