Wilwood Caliper-FNSL4R-Black 1.12/1.12" Pistons,0.81" Disc
Forged Narrow Superlite 4 Radial Mount
The Forged Narrow Superlite 4R (FNSL4R) is our newest version for the venerable Superlite caliper series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a broad range of vehicle applications.
The key to the superior performance of the FNSL4R comes from the extremely durable and efficient body design. Starting at 4.9 pounds it is the product of computer generated solid modeling and FEA stress analysis technology. The most noteworthy feature of this new caliper design is the forging. Each body is stress-flow forged from premium grade aluminum alloy billets. Stress-flow forging re-aligns the metal's internal grain structure to flow within the contour of the caliper body. This process eliminates the stresses and interruptions to the internal grain structure that occur when machining a straight block billet. Simply stated, there is no better way to build a stronger aluminum caliper body.
Available in diiferent piston bore sizes, provides braking as either a front or rear caliper. The standard FNSL4R calipers feature one-piece stainless steel pistons. Stainless is used for its slow heat transfer properties and high resistance to corrosion. Calipers can be upgraded with Wilwood's exclusive Thermlock pistons. This multi-part piston design creates a highly efficient thermal barrier to further reduce heat transfer from the pads to caliper body, seals, and fluid. Cooler temperatures translate to longer service life and less chance for heat induced pedal fade.
Specifications
Piston Count: 4
Piston Area (in²): 1.98
Piston Type: Stainless
Dust Boot: No
Rotor Width (in): 0.81
Rotor Diameter(in): 14
Pad Area (in²): 8.2
Pad Volume (in³): 3.8
Material: Aluminum
Weight(Lbs): 5
Color: Black
Finish: Black Powder Coat
Mount Center(in): 5.98
Mount Side: Universal
Mount Type: Radial
Rotor Compatibility
Rotor Width (in): 0.81
Maximum Rotor Width (in): 0.84
Minimum Rotor Width (in): 0.75
Maximum Rotor Diameter(in): 14
Minimum Rotor Diameter(in): 11.75
Brake Pad Specifications
Brake Pad Type 1: 7416
Brake Pad Type 2: N-A
Brake Pad Type 3: N-A
Total Pad Area (in²): 8.2
Total Pad Volume (in³): 3.8
Piston Specifications
Piston 1 Bore (in): 1.12
Piston 2 Bore (in): 1.12
Total Piston Area (in²): 1.98
Mounting Specifications
Mount Type: Radial
Mount Side: Universal
Mount Center(in): 5.98
Mount Hole Size(in): 0.39
Mount Height(in): 1.45
Inlet Thread Size: 1/8-27 NPT