ENDURO BEARINGS S68808 sp - 440c stainless (angular contact) - 40x53x7 (45x45°)

Upgrade your bike with the high-performance S68808 SP 1-1/2 angular contact headset bearing, crafted from premium 440C stainless steel for exceptional corrosion resistance and durability. Measuring 40mm x 53mm x 7mm (45° x 45°), this bearing is also known in the cycling industry by part numbers like HD 1448 281819. Not all stainless steel is equal—Enduro exclusively uses 440C stainless steel balls and races to ensure long-lasting performance in challenging environments. With the highest strength, hardness, and wear resistance among standard 440-series alloys, 440C requires advanced heat and cryogenic treatments to achieve its superior mechanical properties. Although stainless steel offers approximately 20% less load capacity and is slightly softer than standard 52100 chromium steel, it excels in wet conditions, frequent washing, or environments where sweat may cause corrosion. These bearings feature LLB-type seals and are lubricated with CRC Marine grease for enhanced water resistance. Compatible with many leading headset brands, including those offering a lifetime warranty, Enduro’s line includes treatments from black oxide chromium steel to top-tier XD-15 aerospace-stainless (races and balls). Designed with larger balls, dual-lip labyrinth seals, and filled with 90% waterproof grease, these bearings provide ultimate protection against sweat and the elements. The Angular Contact design ensures even force distribution across all balls, reducing wear and extending lifespan. Static load capacity: 1250 lbf / 5.55 kN. Weight: 24g.