Wilwood GT48 SPC-37 LH Rotor - 12.88" x 1.10" - 12 on 8.75" Bolt Pattern

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SKU: WIL160-12962
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Sale price$266.99 Regular price$316.28
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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

Product Details

Product Description
Part Numbers
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 GT48 SPC-37 LH Rotors: Peak Performance for Extreme Motorsports

Conquer the most demanding racing environments with the Wilwood GT48 SPC-37 LH rotors. These heavy-wall, directional curved vane rotors are engineered for professional motorsports, providing exceptional heat absorption and dissipation to combat brake fade and ensure longevity for your braking components. Experience consistent, reliable stopping power when it matters most.

Precision Machined for Optimal Thermal Dynamics

Cast from premium long-grain carbon iron, the GT48 rotors offer superior wear resistance, thermal stability, and resistance to distortion under extreme heat. Each rotor is meticulously machined to eliminate stress risers and optimize weight distribution. The precision-turned faces and outer diameter, held to within .001 inches for flatness, parallelism, and run-out, guarantee optimal performance. The unique asymmetrical face slot pattern enhances braking by reducing harmonics and promoting balanced thermal distribution across the rotor surface, ensuring smooth and predictable engagement.

  • Type: Two-Piece Brake Rotor
  • Series: GT48
  • Vane Type: Curved Vanes (Directional)
  • Material: Premium Long Grain Carbon Iron
  • Dimensions: 12.88" Diameter x 1.10" Thickness
  • Bolt Pattern: 12 on 8.75 inches
  • Hand: Left Hand (LH)
  • Features: Asymmetrical face slot pattern, precision machined, superior heat dissipation
  • Benefits: Prevents heat fade, maximizes rotor and pad life, provides smooth engagement, enhances thermal balance
  • Applications: Professional motorsports, track days, high-performance street driving

Equip your vehicle with the ultimate in braking technology designed for the rigors of competition. Choose Wilwood GT48 SPC-37 LH rotors for unmatched performance and reliability, available exclusively at GGCRACING.

Product Details

Product Description
Part Numbers
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 GT48 SPC-37 LH Rotors: Peak Performance for Extreme Motorsports

Conquer the most demanding racing environments with the Wilwood GT48 SPC-37 LH rotors. These heavy-wall, directional curved vane rotors are engineered for professional motorsports, providing exceptional heat absorption and dissipation to combat brake fade and ensure longevity for your braking components. Experience consistent, reliable stopping power when it matters most.

Precision Machined for Optimal Thermal Dynamics

Cast from premium long-grain carbon iron, the GT48 rotors offer superior wear resistance, thermal stability, and resistance to distortion under extreme heat. Each rotor is meticulously machined to eliminate stress risers and optimize weight distribution. The precision-turned faces and outer diameter, held to within .001 inches for flatness, parallelism, and run-out, guarantee optimal performance. The unique asymmetrical face slot pattern enhances braking by reducing harmonics and promoting balanced thermal distribution across the rotor surface, ensuring smooth and predictable engagement.

  • Type: Two-Piece Brake Rotor
  • Series: GT48
  • Vane Type: Curved Vanes (Directional)
  • Material: Premium Long Grain Carbon Iron
  • Dimensions: 12.88" Diameter x 1.10" Thickness
  • Bolt Pattern: 12 on 8.75 inches
  • Hand: Left Hand (LH)
  • Features: Asymmetrical face slot pattern, precision machined, superior heat dissipation
  • Benefits: Prevents heat fade, maximizes rotor and pad life, provides smooth engagement, enhances thermal balance
  • Applications: Professional motorsports, track days, high-performance street driving

Equip your vehicle with the ultimate in braking technology designed for the rigors of competition. Choose Wilwood GT48 SPC-37 LH rotors for unmatched performance and reliability, available exclusively at GGCRACING.

Product Details

Product Description

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 GT48 SPC-37 LH Rotors: Peak Performance for Extreme Motorsports

Conquer the most demanding racing environments with the Wilwood GT48 SPC-37 LH rotors. These heavy-wall, directional curved vane rotors are engineered for professional motorsports, providing exceptional heat absorption and dissipation to combat brake fade and ensure longevity for your braking components. Experience consistent, reliable stopping power when it matters most.

Precision Machined for Optimal Thermal Dynamics

Cast from premium long-grain carbon iron, the GT48 rotors offer superior wear resistance, thermal stability, and resistance to distortion under extreme heat. Each rotor is meticulously machined to eliminate stress risers and optimize weight distribution. The precision-turned faces and outer diameter, held to within .001 inches for flatness, parallelism, and run-out, guarantee optimal performance. The unique asymmetrical face slot pattern enhances braking by reducing harmonics and promoting balanced thermal distribution across the rotor surface, ensuring smooth and predictable engagement.

  • Type: Two-Piece Brake Rotor
  • Series: GT48
  • Vane Type: Curved Vanes (Directional)
  • Material: Premium Long Grain Carbon Iron
  • Dimensions: 12.88" Diameter x 1.10" Thickness
  • Bolt Pattern: 12 on 8.75 inches
  • Hand: Left Hand (LH)
  • Features: Asymmetrical face slot pattern, precision machined, superior heat dissipation
  • Benefits: Prevents heat fade, maximizes rotor and pad life, provides smooth engagement, enhances thermal balance
  • Applications: Professional motorsports, track days, high-performance street driving

Equip your vehicle with the ultimate in braking technology designed for the rigors of competition. Choose Wilwood GT48 SPC-37 LH rotors for unmatched performance and reliability, available exclusively at GGCRACING.

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