Overview
The Baer Brakes 4261578R is a red Classic Series front brake kit with a 2-piston pad guided caliper and a 13-inch one-piece integral hub rotor, built for applications that use Wilwood Pro Mii spindles on a 5×4.50 bolt pattern. No specific make, model or year is named for this part number.
This version carries the fitment note w/Wilwood Pro Mii spindles (5×4.5BC). The 13-inch Classic system fits select 17-inch or larger wheels, so match your wheel size and hub pattern before choosing this kit.
Key features
- Aluminum two-piston pad guided caliper with red powder coating and a black Baer logo
- One-piece integral hub rotor with a slotted, drilled, zinc-plated surface
- Caliper ships with dust and weather seals
- Uses the common FMSI D0412 ceramic brake pad
- Bearings come with races pre-installed, plus dust caps
- Mounting brackets and all necessary hardware included
- Steel braided brake hoses, DOT approved
Things to check before mounting
A new caliper and rotor only perform as well as the hydraulic and mechanical parts behind them. Before mounting, look over the spindle, the wheel bearings and the steering linkage for wear or play, because a loose hub will wear a brake pad faster than any kit can prevent. Clean the mating surfaces so the rotor sits flat against the hub.
Bedding the new pads matters for consistent stopping. Make several moderate stops from low speed before using the brakes hard, and let the rotor cool between runs. After the first few weeks of driving, recheck the caliper bolts and the hose connections, since new fittings can settle slightly as they seat.
- Check spindle and bearing play before mounting
- Clean the hub face and rotor mating surface
- Bed in new pads with moderate stops
- Recheck caliper bolts after the first few weeks
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4261578R |
| UPC | 90127853085 |
| Caliper | 2-piston, pad guided (PGC), floating, aluminum |
| Caliper finish | Red powder coated with black logo |
| Rotor | 1-piece integral hub, vented, slotted, drilled and zinc plated |
| Rotor outside diameter | 13.0 inch |
| Rotor thickness | 1.1 |
| Minimum wheel diameter | 17.0 inch |
| Brake pad | FMSI D0412, ceramic |
| Brake hose | Steel braided, DOT approved |
| Wheel bolt pattern | 5×4.50 |
| Spindle type | Wilwood Mustang II Pro |
| Template | D082H |
| Fitment note | w/Wilwood Pro Mii spindles (5×4.5BC) |
| Sold as | Kit |
| Country of origin | USA |
Vehicle fitment
This kit is tied to Wilwood Pro Mii spindles on a 5×4.5 BC pattern. Confirm the spindle and hub pattern before ordering.
The kit is for Wilwood Pro Mii spindles, not stock spindles or other spindle designs. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The system is designed for a 15/16 inch master cylinder with the proper pedal ratio. Manual brakes can use a 7/8 inch master cylinder for lighter pedal effort. A master cylinder larger than 15/16 inch leads to too much pedal input and insufficient line pressure.
Have a qualified installer mount the caliper and bleed the hydraulic lines.
What’s included
Red 2-piston PGC caliper, 1-piece integral hub rotor, premium bearings with races pre-installed, dust caps, mounting brackets and all necessary hardware.
Not included: The Wilwood Pro Mii spindles the kit is built around are not part of the kit.
