Overview
The Baer Big Claw HD rear rotor kit, part number 2142013-2, is made for 2019–2025 Ram 2500 and 3500 trucks with a single rear wheel (SRW) and 2WD or 4WD drive. The HD rotors are drum-in-hat type, up to 2 inches larger than stock on some applications, with directional cooling vanes cast into a one-piece full cast body.
A pair of brackets moves the rear calipers outward so the larger rotors clear, and the kit is designed to keep OE pad and hardware use. Baer reports independent third-party testing with up to a 49 percent gain in braking effectiveness, tied to the larger diameter, and as much as a 200-degree drop in rotor temperature versus OE in extreme conditions, partly attributed to the curved vane design.
Key features
- Heavy-duty rear rotors with more brake torque and leverage for 2500 and 3500 trucks
- Slotted friction face that vents dust and gases for a more consistent pedal feel
- One-piece directional vane design that pumps air through the hat to resist brake fade
- Caliper relocation brackets retain OE pad and hardware compatibility
- Bolt-on installation with no brake bleeding required
- Zinc plated finish for rust resistance behind open-spoke wheels
Rear brake care on heavy trucks
Rear rotors on heavy-duty trucks carry a large share of braking work when the bed is loaded or a trailer is attached. In a drum-in-hat design, the parking brake drum sits inside the hat, so the parking brake shoes and the rotor share one assembly. Keep hub bearing play and parking brake adjustment in check, since both affect how the rear rotor wears.
Before installation, clean rust from the hub face and the rotor’s mounting surface so the rotor sits flat against the hub. Make sure the wheel bolts are clean and seated properly on the new rotor before the first drive.
Signs of rear rotor wear include pulsation in the pedal, a grooved or glazed friction face, and a pulling sensation under braking. Rear pads often wear at a different rate than the fronts, so inspect both axles at the same service.
- Check the parking brake shoes while the rotor is off
- Confirm wheel fit clears the calipers before the first drive
- Re-check lug nut torque after the first few stops
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 2142013-2 |
| UPC | 90127976081 |
| Sold as | Set |
| Country of origin | USA |
| Axle | Rear |
| Drive | 2WD, 4WD |
| Construction | Full cast, one piece |
| Rotor type | Drum-in-hat, vented, floating |
| Surface type | Slotted |
| Vent type design | Curved |
| Directional brake surface | Directional |
| Template | Z326U |
| Material | Cast iron |
| Disc finish | Zinc plated, rust resistant coating |
| Outside diameter | 15 |
| Nominal thickness | 1.354 |
| Discard thickness | 1.26 |
| Overall height | 4.913 |
| Center hole diameter | 4.839 |
| Inside diameter | 8.111 |
| Mounting bolt hole quantity | 8 |
| Mounting bolt hole diameter | 0.65 |
| Mounting bolt hole circle diameter | 6.5 |
| Stud/lug hole quantity | 8 |
| ABS tone ring included | No |
| Warranty | Limited 1 Year Warranty |
Vehicle fitment
It fits the 2019–2025 Ram 2500 and 2019–2025 Ram 3500 rear axle, covering the Dodge/Ram 2500/3500 19-25 application.
The Ram 1500 uses Baer’s separate rear kit, part 2142011, and is not covered by this HD kit. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Installation is a bolt-on rear swap that does not require bleeding the brakes. Use template Z326U to check the rotor against your wheel and spare, because Baer cannot promise fit in every wheel style. With the calipers repositioned outward, confirm clearance once the assembly is complete.
What’s included
Two HD rear rotors and two brackets that reposition the calipers.
