SRAM Centerlock Disc Brake Lockring – External Spline – Black

This SRAM Centerlock lockring is used to secure a Centerlock disc rotor to a compatible hub. It threads into the hub body and clamps the rotor in place, keeping everything aligned and secure. It’s a basic but critical part—if you’re installing, replacing, or servicing a Centerlock rotor, this is the correct style when the hub requires an externally threaded lockring. Key Features • Designed for SRAM Centerlock disc rotors • External thread lockring style • Securely clamps rotor to Centerlock hub • Durable construction for repeated service use • Clean black finish Compatibility & Use Notes • For Centerlock disc brake hubs only • Externally threaded lockring design • Requires a compatible external-lockring tool for installation • Not compatible with 6-bolt rotors • Hub must be designed for external-thread lockrings Service / Ownership Context Correct lockring type matters—some hubs require internal spline lockrings instead. Always confirm hub compatibility before installation. Torque to manufacturer specification and recheck after initial rides to ensure the rotor remains secure. Fit & Use Signals • You’re running Centerlock disc brake hubs • Your hub requires an externally threaded lockring • You’re installing or replacing a Centerlock rotor • Not a fit for 6-bolt rotor systems • Not a fit if your hub requires an internal spline lockring