{"product_id":"enduro-bkcj-0301-11t-xd15-ceramic-brng-pulleys-shimano-11sp-blk","title":"ENDURO BKCJ-0301 11T  XD15 CERAMIC BEARING PULLEYS SHIMANO 11SP - BLACK","description":"\u003cp\u003e\u003cstrong\u003eThe ultimate upgrade pulley. Guaranteed to last forever against corrosion\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese derailleur pulleys are precisely machined from Delrin® and equipped with XD-15 Ceramic-Hybrid radial bearings to improve shifting smoothness and durability. Engineered for high performance, the upper pulley uses CN (tight clearance) bearings to optimize shifting precision, while the lower pulley incorporates C4 (loose clearance) bearings to accommodate chain-line movement effectively.\u003c\/p\u003e\n\u003cp\u003eConstructed from 500 AF Delrin®, these pulleys offer exceptional mechanical tensile strength and rigidity, combined with natural lubricity for smooth operation. Their resistance to moisture, caustic chemicals, and UV exposure ensures long-lasting durability. The Teflon® infusion reduces friction against the bicycle chain, resulting in significantly lower drag compared to aluminum or titanium pulleys. Additionally, Delrin® machines precisely and cleanly, making these pulleys both highly efficient and reliable for demanding cycling performance.\u003c\/p\u003e\n\u003cp\u003eExclusively developed by Enduro Bearings, the XD-15 Ceramic-Hybrid bearings feature corrosion-resistant, cryogenically treated nitrogen steel races paired with Grade 3 Silicon Nitride ceramic balls through a proprietary manufacturing process, delivering top-tier performance. Their deep-groove raceways accommodate oversized Grade 3 ceramic balls, increasing contact surface for enhanced durability and efficiency. Lubricated with 90% fill Kluber NBU52 grease, these bearings improve with use, resisting washout by adhering to and continuously circulating around the balls. The 11-tooth pulley with 5mm bolt holes is specifically designed to upgrade most 11-speed Shimano derailleurs.\u003c\/p\u003e\n\u003cp\u003eEnduro Derailleur Pulleys come in various configurations and performance tiers, including Ceramic-Hybrid, Black-Oxide treated Zero Ceramic as an enhanced option, and the premier XD-15 Ceramic-Hybrid model. Each pulley is expertly precision-engineered and manufactured in the USA.\u003c\/p\u003e","brand":"Enduro Bearings","offers":[{"title":"Default Title","offer_id":40884073103430,"sku":"EBDPBKCJ0301","price":293.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/3081\/4790\/files\/EBDPBKCJ0301.jpg?v=1756256705","url":"https:\/\/crooze.com.au\/products\/enduro-bkcj-0301-11t-xd15-ceramic-brng-pulleys-shimano-11sp-blk","provider":"Crooze","version":"1.0","type":"link"}