FSL4R/ST calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock® pistons in the ST models. Differential piston bores compensate for leading-edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock® pistons in the ST models block heat transfer from the pads and reduce temperatures in the caliper, fluid, and seals by up to 25% over standard stainless steel pistons. Featuring a wear resistant Type III hard anodize finish, these are the go-to calipers for all types sustained hard braking on dirt and asphalt ovals and a wide range of off-road, rally and road course applications.
Specifications
- Piston Count: 4
- Piston Area (in²): 5.18
- Piston Type: Thermlock
- Dust Boot: No
- Rotor Width (in): 1.25
- Rotor Diameter(in): 14.00
- Pad Area (in²): 8.2
- Pad Volume (in³): 4.9
- Material: Forged Aluminium
- Weight(Lbs): 5.5
- Color: Anodize
- Finish: Type III Anodize
- Mount Center(in): 5.98
- Mount Side: Right Hand
- Mount Type: Radial
- Maximum Rotor Width (in): 1.35
- Minimum Rotor Width (in): 1.15
- Maximum Rotor Diameter(in): 14.00
- Minimum Rotor Diameter(in): 11.75
- Brake Pad Type 1: 7420
- Total Pad Area (in²): 8.2
- Total Pad Volume (in³): 4.9
- Piston 1 Bore (in): 1.88
- Piston 2 Bore (in): 1.75
- Total Piston Area (in²): 5.18
- Mount Hole Size(in): 0.39
- Mount Height(in): 1.63
- Inlet Thread Size: 1/8-27 NPT
- O-Ring Kit: 130-2427
- Replacement Piston 1: 200-7550
- Replacement Piston 2: 200-7551
- Cross-Over O-Ring Kit: 130-10540
- Bridge Bolt Kit: 230-5978
- Wear Plate L/H: 300-5923
- Wear Plate R/H: 300-5922
- Bleed Screw Kit: 220-0627
