Description

ENDURO BEARINGS ACB 4545 405495 SS 1-1/2″ Stainless Steel Headset Bearing
Elevate your ride´s performance with the ENDURO BEARINGS ACB 4545 405495 SS, a definitive upgrade for any cyclist demanding precision, durability, and all-weather reliability from their headset. As a critical component in the Spare Parts category, specifically for Headsets, this bearing is engineered to provide an exceptionally smooth and responsive steering experience, mile after mile.
The ACB 4545 405495 SS is a premium 1-1/2´´ stainless steel angular contact bearing designed for precise and smooth steering performance.
Its stainless steel construction offers superior corrosion resistance, making it ideal for all-weather conditions.
Engineered for durability, it provides low friction and high load capacity, ensuring optimal handling and longevity in both road and mountain biking applications.
Unmatched Steering Precision with Angular Contact Design
Unlike standard radial bearings found in many stock headsets, this component features Enduro Bearings´ signature Angular Contact Bearing (ACB) design. This specialized engineering allows the bearing to handle both radial (side-to-side) and significant axial (thrust) loads simultaneously. For a cyclist, this translates directly into a rock-solid, play-free front end. Every steering input is transferred directly to the fork, offering immediate feedback and enhanced control, whether you´re navigating a technical rock garden or carving through a high-speed corner on the tarmac. This eliminates the vague feeling or微-play that can develop in lesser bearings, boosting rider confidence.
Built to Endure: Superior Materials and Construction
The “SS” in the part number stands for Stainless Steel, the core of this bearing´s resilience. Enduro utilizes high-grade 440C stainless steel for the bearing races and balls. This material is renowned not only for its hardness and exceptional wear resistance but, more critically, for its superior ability to resist corrosion from moisture, sweat, and road grime. This makes the ACB 4545 405495 SS the perfect choice for riders who don´t let rain, mud, or humidity stop them. It actively prevents the dreaded “indexed” or notchy steering that occurs when bearings rust and pit, ensuring a consistently smooth feel for the life of the bearing. Paired with robust, dual-lip LLB seals and a high-pressure waterproof grease, this bearing is a fortress against contamination.
The Enduro Advantage
Choosing an Enduro Bearing means investing in a component that is designed to outperform and outlast the competition. This 1-1/2″ headset bearing is a direct-fit replacement for a wide range of modern mountain bike and road bike frames, offering a tangible upgrade over factory-installed parts. The combination of precision manufacturing, advanced ACB design, and corrosion-proof stainless steel construction results in a “set it and forget it” solution that provides long-term performance, reduces maintenance, and ultimately enhances every moment of your ride.
Technical Specifications
* Part Number: ACB 4545 405495 SS
* Application: Headset / Steering
* Type: Angular Contact Bearing (ACB)
* Size Standard: 1-1/2″
* Inner Angle: 45°
* Outer Angle: 45°
* Material: 440C Stainless Steel Balls and Races
* Attribute: Bearings
* Key Features: High corrosion resistance, high load capacity, low friction, designed for combined axial and radial loads