Wilwood
Wilwood Forged Superlite 4-ST Brake Caliper - 1.88/1.75in Pistons, 1.25in Disc
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Wilwood Forged Superlite 4-ST Brake Caliper - 1.88/1.75in Pistons, 1.25in Disc
Wilwood

Wilwood Forged Superlite 4-ST Brake Caliper - 1.88/1.75in Pistons, 1.25in Disc

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SKU: WIL120-11331

About Wilwood Wilwood Engineering has been the American leader in ...Read more

Price:
$457.60 $494.21
4570 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

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Sizing & Fit

About Wilwood

Wilwood Engineering has been the American leader in aftermarket racing brakes since 1977. Forged aluminum calipers, two-piece slotted rotors, and master cylinders engineered for NASCAR, IndyCar, sprint cars, and street-legal big brake kits.

Wilwood Forged Superlite 4-ST (FSLI4/ST) Brake Caliper

Elevate your braking system with the Wilwood Forged Superlite 4-ST (FSLI4/ST) caliper, designed for ultimate heat protection. This high-performance caliper builds upon the FSLI4's advantages by incorporating Thermlock® pistons. These advanced pistons significantly reduce heat transfer from the brake pads to the caliper, fluid, and seals, lowering temperatures by up to 25% compared to standard stainless steel pistons. This makes the FSLI4/ST an exceptional choice for sustained hard braking in extreme conditions.

Key Features:

  • Forged aluminum construction for superior strength and durability.
  • Differential bore pistons (1.88in and 1.75in) for optimized pad wear.
  • Thermlock® pistons for enhanced heat resistance and reduced fluid temperatures.
  • Designed for 1.25in disc applications.
  • Perfect for demanding applications like dirt/asphalt ovals, off-road, rally, and road courses.

The FSLI4/ST caliper is engineered to perform under pressure, providing consistent stopping power and reliability when you need it most. Invest in the best for your vehicle's braking system. Discover the difference Wilwood performance makes at GGCRACING.

About Wilwood

Wilwood Engineering has been the American leader in aftermarket racing brakes since 1977. Forged aluminum calipers, two-piece slotted rotors, and master cylinders engineered for NASCAR, IndyCar, sprint cars, and street-legal big brake kits.

Wilwood Forged Superlite 4-ST (FSLI4/ST) Brake Caliper

Elevate your braking system with the Wilwood Forged Superlite 4-ST (FSLI4/ST) caliper, designed for ultimate heat protection. This high-performance caliper builds upon the FSLI4's advantages by incorporating Thermlock® pistons. These advanced pistons significantly reduce heat transfer from the brake pads to the caliper, fluid, and seals, lowering temperatures by up to 25% compared to standard stainless steel pistons. This makes the FSLI4/ST an exceptional choice for sustained hard braking in extreme conditions.

Key Features:

  • Forged aluminum construction for superior strength and durability.
  • Differential bore pistons (1.88in and 1.75in) for optimized pad wear.
  • Thermlock® pistons for enhanced heat resistance and reduced fluid temperatures.
  • Designed for 1.25in disc applications.
  • Perfect for demanding applications like dirt/asphalt ovals, off-road, rally, and road courses.

The FSLI4/ST caliper is engineered to perform under pressure, providing consistent stopping power and reliability when you need it most. Invest in the best for your vehicle's braking system. Discover the difference Wilwood performance makes at GGCRACING.

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