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Centric 121.44139 Disc Brake Rotor - Front Right
| Brand | Centric 121.44139 |
|---|---|
| Position | Front Right |
| ABS Tone Ring Included | No |
| Bearings Included | No |
| Center Hole Diameter | 2.441 |
| Center Hole Diameter | 62.000 |
| Disc Mounting [cntrc] | Floating |
| Discard Thickness | 1.181 |
| Discard Thickness | 30.000 |
| Misc Holes [cntrc] | 2 |
| Mounting Bolt Hole Circle Diameter | 4.500 |
| Mounting Bolt Hole Circle Diameter | 114.300 |
| Nominal Thickness | 1.260 |
| Nominal Thickness | 32.000 |
| Outside Diameter | 11.646 |
| Outside Diameter | 295.800 |
| Overall Height | 2.000 |
| Overall Height | 50.800 |
| Solid Or Vented Type Rotor | Vented |
| Stud/Lug Hole Diameter | 0.575 |
| Stud/Lug Hole Diameter | 14.600 |
| Stud/Lug Hole Quantity | 5 |
| Surface Type | Smooth |
| Vane Style [cntrc] | Straight |
| Weight [cntrc] kgs | 8.860 |
| Weight [cntrc] lbs | 19.500 |
| Product line | C-TEK Standard Disc Brake Rotors |
| Fits | Lexus · 8 vehicles |
Vented design. Helps move air through the rotor for more consistent braking performance.
Smooth surface. Promotes even pad contact for dependable stopping feel.
Standard disc rotor. A practical replacement with solid service life and value.
Cross-references DuraGo BR900546, Gates 31445 and PowerStop JBR1146 for the same application. See all 7.
Centric C-TEK Front Right Brake Rotor
The Centric C-TEK Standard Disc Brake Rotor, part number 121.44139, is a vented front right rotor built for consistent braking performance and dependable service life. It is a direct-fit option for select Lexus applications, including Lexus IS250 and Lexus GS300 front right positions.
Key Features
- Centric C-TEK Standard Disc Brake Rotors line for everyday braking service
- Vented rotor design with a smooth surface type
- Outside diameter: 11.646 in. / 295.800 mm
- Nominal thickness: 1.260 in. / 32.000 mm
- Discard thickness: 1.181 in. / 30.000 mm
- Overall height: 2.000 in. / 50.800 mm
- 5-lug pattern with 4.500 in. / 114.300 mm bolt circle
- Center hole diameter: 2.441 in. / 62.000 mm
- Straight vane style with floating disc mounting
- ABS tone ring not included; bearings not included
Product Details
Centric 121.44139 is engineered as a standard replacement disc brake rotor for front right applications where stable pedal feel and predictable stopping performance matter. The vented construction helps manage heat during repeated braking, while the smooth friction surface supports even pad contact. This rotor matches the fitment and dimensions needed for 2006 Lexus GS300 front right, 2009 Lexus IS250 front right with front caliper casting #60-32, and 2010-2015 Lexus IS250 front right. This part cross-references PowerStop JBR1146 and Raybestos Brakes 980487R for the same application.
Common Brake Issues It Can Address
- Brake pulsation caused by rotor wear or thickness variation
- Reduced braking consistency from an overheated or worn front rotor
- Noise or vibration linked to an uneven rotor surface
- Service replacement for a rotor that has reached discard thickness
- Front brake maintenance on Lexus IS250 and Lexus GS300 applications
Installation Notes and Tips
Verify rotor dimensions, bolt circle, center hole diameter, and front right position before installation. Inspect pads, caliper hardware, and hub condition at the same time to help ensure proper rotor seating and even wear. Clean the hub mounting surface thoroughly so the floating disc mounting sits flat and the rotor runs true.
Quality Assurance
Centric positions the C-TEK Standard Disc Brake Rotors line as a value-focused replacement option for a wide range of applications, balancing service life and braking performance. Part number 121.44139 is built to meet the dimensional requirements listed above for confirmed Lexus fitments.
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2015 | Lexus | IS250 | Convertible | Front Right | C-TEK Standard Disc Brake Rotors |
| 2014 | Lexus | IS250 | Convertible | Front Right | C-TEK Standard Disc Brake Rotors |
| 2013 | Lexus | IS250 | — | Front Right | C-TEK Standard Disc Brake Rotors |
| 2012 | Lexus | IS250 | — | Front Right | C-TEK Standard Disc Brake Rotors |
| 2011 | Lexus | IS250 | — | Front Right | C-TEK Standard Disc Brake Rotors |
| 2010 | Lexus | IS250 | — | Front Right | C-TEK Standard Disc Brake Rotors |
| 2009 | Lexus | IS250 | — | Front Right | Front Caliper Casting #60-32; C-TEK Standard Disc Brake Rotors |
| 2006 | Lexus | GS300 | — | Front Right | C-TEK Standard Disc Brake Rotors |
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