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10PCS S688RSCB 8x16x5 mm Hybrid Ceramic Si3N4 Ball Bearing Bicycle Bottom Brackets & Spares Rear wheel S688 2RS Bearings
10PCS S688RSCB 8x16x5 mm Hybrid Ceramic Si3N4 Ball Bearing Bicycle Bottom Brackets & Spares Rear wheel S688 2RS Bearings
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$28.57 USD
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Specifications:
Item: S688RS CB
Structure: Deep Groove
Material: Bearing Steel Hybrid Ceramic Si3N4
Bore Dia (d): 8 mm
Outer Dia (D): 16 mm
Width (B): 5 mm
Closures: Metal Seal
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Grades: ABEC-7
Features:
Forged for the uncompromising demands of competitive cycling and high-performance upgrades, these micro-engineered hybrid ceramic bearings target the core load points of your drivetrain: the bottom bracket and rear wheel hub. Injecting race-proven smoothness and durability, they eliminate frictional drag at critical rotation points to maximize pedaling efficiency, drivetrain sensitivity, and all-weather reliability—without a single modification to your frame.
✅ Critical Friction Reduction at the Bottom Bracket
Installed in the bottom bracket, its hybrid ceramic core (stainless steel races + silicon nitride balls) reduces rotational drag by over 40%. Experience immediate power transfer: quicker acceleration from a standstill, easier maintenance of high speeds, and more of every watt translated into forward motion—essential for decisive sprints and climbs.
✅ Enhanced Hub Stability for Superior Wheel Rigidity
Deployed within the rear wheel hub, its precise dimensions tolerance minimize microscopic housing flex. Feel buttery-smooth and stable wheel rotation, ensuring efficient power transfer, reduced energy loss, and improved support during high lateral loads (e.g., standing sprints, sharp corners).
✅ Bicycle-Specific, All-Environment Durability
Featuring dual rubber seals (2RS) and corrosion-resistant stainless steel construction, these bearings defy rain, mud, road salt, and harsh cleaning agents. Their compact, industry-standard size allows for a perfect drop-in replacement for OEM bearings in most standard bottom brackets and hubs, providing long-lasting armor-like protection for your drivetrain's heart.
✅ Tournament-Proven, Ultra-Long Maintenance Intervals
Pre-lubricated with specialty grease, they maintain consistent performance under extreme conditions and heavy use. Their service life far exceeds standard steel bearings, significantly extending maintenance cycles—so you can focus on training and racing without worrying about sudden bearing failure or performance fade.
This bearing set is the definitive upgrade for serious riders and mechanics, transforming pedaling efficiency, drivetrain smoothness, and exceptional durability into a tangible advantage you can feel on every ride, climb, and sprint. Engineered for victory—one frictionless rotation at a time.
