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Centric 121.45093 Disc Brake Rotor - Rear
Overview of Centric C-TEK Standard Disc Brake Rotor 121.45093
The Centric C-TEK Standard Disc Brake Rotor 121.45093 is engineered for reliable braking performance on select Mazda vehicles. Designed as a solid, smooth-surface rotor, it provides consistent stopping power for Mazda 3, CX-3, and CX-30 models.
- Compatible with Mazda 3, CX-3, and CX-30
- Part number: 121.45093
- Solid disc brake rotor with smooth surface
- Outside diameter: 10.417 inches (264.6 mm)
- Nominal thickness: 0.354 inches (9.0 mm)
- Discard thickness: 0.276 inches (7.0 mm)
- Overall height: 1.539 inches (39.1 mm)
- Floating disc mounting design
- 5 lug holes with 4.5 inch (114.3 mm) bolt circle diameter
- Center hole diameter: 2.681 inches (68.1 mm)
- Weight approximately 8.1 lbs (3.68 kg)
Product Line Details: C-TEK Standard Disc Brake Rotors
The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM specifications for standard braking applications. This product line focuses on providing solid rotors with smooth surfaces, suitable for everyday driving conditions. The 121.45093 rotor maintains consistent thickness and dimensions to ensure proper fitment and reliable performance on compatible Mazda vehicles.
Technical Description and Specifications
This Centric rotor features a solid construction with a smooth surface type, optimized for standard braking systems without ABS tone rings or included bearings. The rotor measures 10.417 inches in outside diameter and has a nominal thickness of 0.354 inches, with a discard thickness of 0.276 inches, indicating when replacement is necessary. The overall height is 1.539 inches, and it uses a floating disc mounting design to accommodate thermal expansion and reduce stress. The rotor includes five lug holes with a 4.5-inch bolt circle diameter, and a center hole diameter of 2.681 inches, ensuring precise fitment on Mazda 3, CX-3, and CX-30 models.
Common Applications and Problem Solving
- Replacement for worn or warped rotors on Mazda 3, CX-3, and CX-30
- Addresses brake pulsation caused by uneven rotor surfaces
- Resolves reduced braking efficiency due to rotor thickness below discard limits
- Eliminates noise and vibration from damaged or scored rotors
- Restores proper rotor dimensions for safe and consistent braking
Installation Notes and Tips
- Verify rotor dimensions and part number 121.45093 before installation
- Ensure mating surfaces are clean and free of debris
- Check lug nut torque specifications for Mazda 3, CX-3, and CX-30
- Inspect brake pads and replace if worn to prevent uneven rotor wear
- Follow manufacturer guidelines for bedding in new rotors
Quality Assurance and Warranty
Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Users should consult product documentation or Centric directly for warranty terms related to part number 121.45093.
| Brand | Centric |
|---|---|
| Part Number | 121.45093 |
| Position | C-TEK Standard Disc Brake Rotors, Rear |
| ABS Tone Ring Included | No |
| Bearings Included | No |
| Center Hole Diameter | 2.681 |
| Center Hole Diameter | 68.100 |
| Disc Mounting [cntrc] | Floating |
| Discard Thickness | 0.276 |
| Discard Thickness | 7.000 |
| Hat ID [cntrc] in | 5.563 |
| Hat ID [cntrc] mm | 141.300 |
| Misc Holes [cntrc] | 1 |
| Mounting Bolt Hole Circle Diameter | 4.500 |
| Mounting Bolt Hole Circle Diameter | 114.300 |
| Nominal Thickness | 0.354 |
| Nominal Thickness | 9.000 |
| Outside Diameter | 10.417 |
| Outside Diameter | 264.600 |
| Overall Height | 1.539 |
| Overall Height | 39.100 |
| Solid Or Vented Type Rotor | Solid |
| Stud/Lug Hole Diameter | 0.524 |
| Stud/Lug Hole Diameter | 13.300 |
| Stud/Lug Hole Quantity | 5 |
| Surface Type | Smooth |
| Weight [cntrc] kgs | 3.680 |
| Weight [cntrc] lbs | 8.100 |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2023 | Mazda | 3 | Rear | CTEK Standard Disc Brake Rotors | |
| 2023 | Mazda | CX-30 | FWD | Rear | 265mm Rear Disc; CTEK Standard Disc Brake Rotors |
| 2022 | Mazda | 3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2022 | Mazda | CX-3 | Rear | CTEK Standard Disc Brake Rotors | |
| 2022 | Mazda | CX-30 | FWD | Rear | 265mm Rear Disc; CTEK Standard Disc Brake Rotors |
| 2021 | Mazda | 3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2021 | Mazda | CX-3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2021 | Mazda | CX-30 | FWD | Rear | 265mm Rear Disc; C-TEK Standard Disc Brake Rotors |
| 2021 | Mazda | CX-30 | AWD | Rear | 265mm Rear Disc; C-TEK Standard Disc Brake Rotors |
| 2020 | Mazda | 3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2020 | Mazda | CX-3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2020 | Mazda | CX-30 | FWD | Rear | 265mm Rear Disc; C-TEK Standard Disc Brake Rotors |
| 2020 | Mazda | CX-30 | AWD | Rear | 265mm Rear Disc; C-TEK Standard Disc Brake Rotors |
| 2019 | Mazda | 3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2019 | Mazda | CX-3 | Rear | C-TEK Standard Disc Brake Rotors | |
| 2018 | Mazda | 3 | Rear | CTEK Standard Disc Brake Rotors | |
| 2017 | Mazda | 3 | Rear | CTEK Standard Disc Brake Rotors | |
| 2016 | Mazda | 3 | Rear | CTEK Standard Disc Brake Rotors | |
| 2015 | Mazda | 3 | Rear | CTEK Standard Disc Brake Rotors | |
| 2014 | Mazda | 3 | Rear | CTEK Standard Disc Brake Rotors |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.