{"product_id":"bund5639","title":"Enduro Ceramic Hybrid 6903 LLB Sealed Cartridge Bearings - High-Performance Silicon Nitride, Cryo-Treated Steel, Low-Contact Seal, Precision MTB \u0026 BMX Parts (2-Pack)","description":"\u003cdiv id=\"seqbpdescription\"\u003e\u003cp\u003eUltimate Enduro Ceramic Hybrid 6903 LLB Sealed Cartridge Bearings Precision High-Performance Bike Components Upgrade your bicycles performance with this exclusive bundle of two Enduro Ceramic Hybrid 6903 LLB Sealed Cartridge Bearings, engineered for durability, smoothness, and efficiency. Designed for demanding enduro, mountain biking, and trail riding applications, these high-quality bearings combine advanced materials and innovative sealing technology to keep your bike running at peak performance in harsh conditions. Materials \u0026amp; Engineering Excellence Crafted with Grade 5 silicon nitride (Si3N4) ceramic balls for reduced weight, increased hardness, and superior fatigue resistance, these bearings deliver exceptional precision and longevity. The high-carbon 52100 chromium steel races undergo three cryogenic treatments, enhancing resilience and reducing wear under rigorous cycling loads. The nylon and graphite retainers provide excellent stability and low-friction operation, ensuring a smooth riding experience. Advanced Components \u0026amp; Technology Featuring LLB dual-lip, low-contact Nitrile Butadiene rubber labyrinth seals, these bearings excel at protecting against dirt, water, and contaminants while maintaining minimal friction. The ABEC 5 precision rating guarantees high tolerances and smooth operation, making them ideal for high-performance bicycle applications that demand reliability and efficiency. Design \u0026amp; Use Case Perfect for mountain biking, enduro, and trail cyclists, these sealed cartridge bearings are engineered to withstand tough terrain and extreme conditions. Their compact 17x30x7mm size ensures compatibility with various bike components, including hubs, suspensions, and cranksets. Whether you're replacing worn bearings or upgrading for improved ride quality, these ceramic hybrid bearings deliver superior performance and enduring value. Key Features: - High-precision ABEC 5 certification for optimal smoothness - Grade 5 Silicon Nitride (Si3N4) ceramic balls for lightweight strength - Cryogenically treated 52100 steel races for increased durability - Low-contact NBR labyrinth seals for superior contamination resistance - Nylon\/graphite retainers for low friction and enhanced stability - Reube Special Ceramic Grade 374 Grease for consistent lubrication - Includes 2 bearings for comprehensive upgrade or replacement Optimize your bicycles drivetrain and suspension components with these premium Enduro Ceramic Hybrid 6903 LLB Sealed Cartridge Bearingsbuilt for riders who demand the best in performance, reliability, and innovation.\u003c\/p\u003e\u003c\/div\u003e","brand":"Enduro","offers":[{"title":"Default Title","offer_id":43635114606659,"sku":"BUND5639","price":66.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/BUND5639.png?v=1785963966","url":"https:\/\/365cycles.com\/products\/bund5639","provider":"365 Cycles","version":"1.0","type":"link"}