Stoptech 126.45068SL Disc Brake Rotor - Front Left

StopTech Slotted Rotor for Mazda 3 Front Left

The StopTech Sport Slotted Disc Brake Rotor is a direct replacement front left rotor for select Mazda 3 and Mazda 3 Sport applications. Built for factory brake systems and stock calipers, part number 126.45068SL adds slotted surface performance while maintaining OE-style fitment.

Key Features

• Fits 2004-2013 Mazda 3, front left
• Fits 2009-2010 Mazda 3 Sport, front left
• Fits 2012-2013 Mazda 3 Sport, front left
• Slotted surface helps move heat and brake dust away from the pad face
• Helps reduce pad glazing and improve initial bite
• Vented rotor design for front brake applications
• Black e-coating helps protect non-friction surfaces from corrosion
• High-carbon metallurgy in most applications for quieter operation and improved crack resistance
• Coated hat finish
• 5-lug rotor with 114.3 mm bolt circle and 72.0 mm center hole

Product Details

StopTech Sport Slotted Disc Brake Rotors are engineered as one-piece direct replacement brake discs for factory brake systems. The slot pattern is used to clear gases, dust, and heat from the pad contact area, which supports more consistent braking response in wet and dry conditions. For Mazda 3 and Mazda 3 Sport owners looking for a front left rotor upgrade, part number 126.45068SL combines OE-style fitment with a performance-oriented surface design.

This rotor measures 278.0 mm outside diameter, 24.9 mm nominal thickness, 23.0 mm discard thickness, and 48.7 mm overall height. It uses a floating disc mounting style, straight vane construction, and a vented rotor layout. The coated hat and black e-coating help resist corrosion on exposed surfaces while preserving the braking surface where it matters.

Common Issues This Rotor Can Address

• Brake fade caused by heat buildup during repeated stops
• Pad glazing that can reduce pedal response
• Brake dust accumulation on the rotor face
• Uneven braking feel in wet or dry driving
• Corrosion on exposed rotor surfaces

Installation Notes

Install on the front left position only for the listed Mazda 3 and Mazda 3 Sport applications. Verify rotor dimensions, hub fitment, and brake pad condition before installation. This rotor is intended for use with stock calipers and factory brake systems. Part number 126.45068SL should be matched to the vehicle’s exact year, model, and position before service.

Quality Assurance

StopTech designs this rotor with corrosion protection and, in most applications, high-carbon metallurgy for improved noise control and crack resistance. The Sport Slotted Disc Brake Rotors line focuses on direct replacement performance for street-driven vehicles that need consistent braking and OE-style fitment.