ENDURO BEARINGS Acb 4545 405495 ss - 440c stainless (angular contact) - 40,5x49,5x6,5 (45x45°)

Upgrade your bike with the high-performance ACB 4545 405495 SS 1-1/2 angular contact headset bearing, designed with 440C stainless steel balls and races for exceptional corrosion resistance and durability. This 40.5mm x 49.5mm x 6.5mm bearing (45°x45° angle) is also known in the cycling industry as part number HSS 6011 ACB495H6.5. Enduro exclusively uses 440C stainless steel to ensure long-lasting performance even in challenging environments, thanks to its high strength, hardness, and wear resistance. Although stainless steel has about 20% less load capacity and is slightly softer than standard 52100 chromium steel, it offers excellent corrosion resistance for wet conditions, frequent washing, or sweat-prone environments. These bearings feature LLB type seals and CRC Marine grease for enhanced water resistance. Recognized by many top headset brands, Enduro 440C stainless bearings come with a limited lifetime warranty. The Enduro line offers two performance levels: the entry-level with Black-Oxide treated races and a two-year warranty, and the premium 440C stainless model with a full lifetime warranty. Engineered with large balls and dual-lip labyrinth seals, these bearings provide maximum protection against sweat and the elements, ensuring smooth operation and extended bearing life. The Angular Contact (A/C) design distributes load evenly across all balls, minimizing premature wear. Static load capacity is 470 lbf / 2.09 kN, and weight is 24g.