PowerStop JBR1399 Disc Brake Rotor - Front

Front OE Stock Replacement Rotor for Mazda CX-9

PowerStop JBR1399 is a front disc brake rotor built as a direct-fit OE stock replacement for the 2007-2015 Mazda CX-9. It follows original equipment dimensions for a straightforward brake service on the front axle.

Power Stop’s Autospecialty rotor line focuses on OE-style fit and performance for everyday driving. For shoppers looking for a front brake rotor for Mazda CX-9 models, JBR1399 provides the stock-replacement format expected in a routine brake repair.

Key Features

• Direct-fit front disc brake rotor for 2007-2015 Mazda CX-9
• Vented rotor design for front brake applications
• Outside diameter: 12.60 in. / 320.00 mm
• Nominal thickness: 1.10 in. / 28.00 mm
• Discard thickness: 1.02 in. / 26.00 mm
• Overall height: 1.90 in. / 48.30 mm
• 5-lug mounting pattern with 114.30 mm / 4.50 in. bolt circle diameter
• OE-style replacement from PowerStop Autospecialty

Product Details

PowerStop JBR1399 is a vented front brake rotor engineered to match OE fitment requirements for the Mazda CX-9. The rotor’s 320 mm outside diameter, 28 mm nominal thickness, and 114.30 mm bolt circle support proper alignment with the vehicle’s front brake system. This part number is a practical choice for drivers replacing worn front rotors on 2007-2015 Mazda CX-9 models and wanting a stock-replacement format rather than a performance upgrade.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Brake pulsation caused by rotor wear or thickness variation
• Reduced braking consistency from worn front rotors
• Noise related to rotor surface condition
• Service replacement for rotors that have reached discard thickness
• Front brake maintenance on Mazda CX-9 models

Installation Notes and Tips

Fits 2007-2015 Mazda CX-9, front. Verify rotor dimensions, hub fit, and brake system condition before installation. Inspect pads, calipers, and mounting surfaces during service so the new rotor can seat correctly and deliver even braking performance. JBR1399 is a vented front rotor, so confirm the vehicle uses a vented front rotor configuration before ordering.

Quality Assurance

PowerStop positions this Autospecialty rotor line as an OE-style replacement solution for original equipment fit and performance. JBR1399 is built to match the factory replacement format for the Mazda CX-9 front brake application.