SRAM Centerlock Brake Rotor External Spline Lockring Alloy

SRAM Centerlock Brake Rotor External Spline Lockring – Lightweight Alloy

This genuine SRAM Centerlock lockring is designed for securing Centerlock disc brake rotors to compatible SRAM and Shimano-style Centerlock hubs. Featuring a lightweight alloy construction, it offers reliable rotor retention while minimizing rotational weight—ideal for road, gravel, XC, and performance-oriented builds.

Designed to interface with external spline lockring tools, this lockring is commonly used on hubs with larger axle diameters where internal spline lockrings are not compatible.

Key Features & Benefits

• Genuine SRAM OEM part
  Factory-correct Centerlock rotor lockring

• External spline interface
  Compatible with standard external BB-style lockring tools

• Lightweight alloy construction
  Reduces rotational mass without sacrificing security

• Secure rotor mounting
  Maintains proper rotor alignment and braking performance

• Ideal replacement or upgrade
  Perfect for service, wheel builds, or missing hardware

Compatibility

✔ Centerlock disc brake rotors
✔ SRAM & Shimano-compatible Centerlock hubs
✔ Hubs requiring external spline lockrings

❌ Not compatible with:

• 6-bolt rotors

• Internal-spline-only Centerlock applications

Technical Specifications

• Type: Centerlock rotor lockring

• Interface: External spline

• Material: Aluminum alloy

• Color: Black

• Tool Interface: External BB-style lockring tool

• SRAM Part Number: 11.2018.063.004

Installation Notes

• Torque to manufacturer specification (typically 40 Nm)

• Use appropriate external spline lockring tool

• Apply light grease to threads during installation

Why Choose OEM SRAM Hardware?

Using genuine SRAM brake hardware ensures:

• Proper rotor retention and alignment

• Quiet, vibration-free braking

• Compatibility with SRAM braking systems

• Long-term durability and serviceability

A lightweight, factory-correct solution for securing Centerlock rotors—essential hardware for reliable braking performance.