Wilwood HD48 SPC-37-RH 2-Piece Brake Rotor 12.19" x 1.25" - 8 on 7.00" Bolt Circle

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SKU: WIL160-11835
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Sale price$180.99 Regular price$214.32
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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 HD48 SPC-37-RH Curved Vane 2-Piece Brake Rotors

Wilwood's HD 48 Curved Vane Spec-37 rotors are engineered for the most demanding applications, utilizing a proprietary iron alloy that offers exceptional resistance to extreme temperatures, distortion, warping, cracking, and wear. This advanced alloy formulation is derived from technology used in Wilwood's extreme-duty military specification rotors.

Unmatched Durability & Performance:

  • Proprietary Spec-37 Iron Alloy: Developed for maximum thermal stability and longevity under extreme conditions.
  • Extreme Temperature Resistance: Built to withstand intense heat without compromising integrity.
  • High Resistance to Distortion: Minimizes warping and cracking, ensuring consistent performance.
  • Curved Vane Design: Promotes superior airflow for effective cooling.
  • Smooth Pad Contact Faces: Machined for optimal and consistent friction with brake pads.
  • 2-Piece Construction: Enhances thermal management and allows for easier component replacement.
  • Specific Dimensions: Features a 12.19-inch diameter, 1.25-inch thickness, and an 8 on 7.00-inch bolt circle.

These HD Series rotors represent the pinnacle of braking technology for high-performance vehicles and racing applications. They provide the confidence and reliability needed when pushing the limits. Equip your vehicle with these top-tier brake rotors from 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 HD48 SPC-37-RH Curved Vane 2-Piece Brake Rotors

Wilwood's HD 48 Curved Vane Spec-37 rotors are engineered for the most demanding applications, utilizing a proprietary iron alloy that offers exceptional resistance to extreme temperatures, distortion, warping, cracking, and wear. This advanced alloy formulation is derived from technology used in Wilwood's extreme-duty military specification rotors.

Unmatched Durability & Performance:

  • Proprietary Spec-37 Iron Alloy: Developed for maximum thermal stability and longevity under extreme conditions.
  • Extreme Temperature Resistance: Built to withstand intense heat without compromising integrity.
  • High Resistance to Distortion: Minimizes warping and cracking, ensuring consistent performance.
  • Curved Vane Design: Promotes superior airflow for effective cooling.
  • Smooth Pad Contact Faces: Machined for optimal and consistent friction with brake pads.
  • 2-Piece Construction: Enhances thermal management and allows for easier component replacement.
  • Specific Dimensions: Features a 12.19-inch diameter, 1.25-inch thickness, and an 8 on 7.00-inch bolt circle.

These HD Series rotors represent the pinnacle of braking technology for high-performance vehicles and racing applications. They provide the confidence and reliability needed when pushing the limits. Equip your vehicle with these top-tier brake rotors from 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 HD48 SPC-37-RH Curved Vane 2-Piece Brake Rotors

Wilwood's HD 48 Curved Vane Spec-37 rotors are engineered for the most demanding applications, utilizing a proprietary iron alloy that offers exceptional resistance to extreme temperatures, distortion, warping, cracking, and wear. This advanced alloy formulation is derived from technology used in Wilwood's extreme-duty military specification rotors.

Unmatched Durability & Performance:

  • Proprietary Spec-37 Iron Alloy: Developed for maximum thermal stability and longevity under extreme conditions.
  • Extreme Temperature Resistance: Built to withstand intense heat without compromising integrity.
  • High Resistance to Distortion: Minimizes warping and cracking, ensuring consistent performance.
  • Curved Vane Design: Promotes superior airflow for effective cooling.
  • Smooth Pad Contact Faces: Machined for optimal and consistent friction with brake pads.
  • 2-Piece Construction: Enhances thermal management and allows for easier component replacement.
  • Specific Dimensions: Features a 12.19-inch diameter, 1.25-inch thickness, and an 8 on 7.00-inch bolt circle.

These HD Series rotors represent the pinnacle of braking technology for high-performance vehicles and racing applications. They provide the confidence and reliability needed when pushing the limits. Equip your vehicle with these top-tier brake rotors from GGCRACING.

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