Repair guides › Brakes

Replace a Center Lock rotor

Rotor held by a single splined lockring. Internal-spline lockrings (QR hubs) use the cassette lockring tool; external-notch lockrings (thru-axle hubs) use an external BB tool.

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Tools

• Cassette lockring tool: Park Tool FR-5.2 ($)
• 12" adjustable wrench: Crescent 12 inch adjustable wrench ($)
• 3/8" click torque wrench 10–60 Nm: Pro Bike Tool 3/8 inch Drive Click Torque Wrench Set 10-60 Nm ($$$)
• External BB wrench + crank cap tool: Park Tool BBT-9 + Shimano TL-FC16 ($$)

Compare Good, Better and Best for each tool

Steps

1. Remove the lockring with the lockring tool (or the external BB tool on thru-axle hubs).
2. Swap the rotor (arrow = rotation).
3. Tighten lockring to 40 Nm.

Signs it needs doing

• Rotor rattles (loose lockring)