Wilwood HD36 Spec-37 2-Piece Rotor - LH 12.19" x .810" 8x7" Bolt Circle — Wilwood Brake Rotors

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SKU: WIL160-12290
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Sale price$150.99 Regular price$178.34
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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 HD36 Spec-37 2-Piece Rotor - Left Hand

Ensure optimal braking balance with the Wilwood HD36 Spec-37 2-Piece Rotor, specifically designed for the left-hand side of your vehicle. This rotor features a 12.19-inch diameter, a .810-inch thickness, and an 8 on 7.00-inch bolt circle, providing a precise fit for compatible braking systems.

Engineered for Extreme Conditions

Crafted from Wilwood's exclusive Spec-37 iron alloy, these HD36 rotors are engineered to withstand the rigors of high-performance driving and extreme temperatures. This advanced alloy offers superior resistance against:

  • Intense heat buildup
  • Distortion and warping under load
  • Cracking and premature wear

The material science behind this alloy is rooted in technology developed for extreme-duty military specification rotors, ensuring exceptional reliability. The HD Series preparation includes meticulous full detail machining and smooth pad contact faces, designed for consistent braking without the use of slots.

Key Features:

  • Extreme Temperature Resistance: Spec-37 alloy handles high heat effectively.
  • Enhanced Durability: Resists warping, cracking, and wear for longer life.
  • Consistent Performance: Smooth pad surfaces ensure reliable stopping power.
  • Precision Machining: Built to strict tolerances for flatness and run-out.

For a left-hand side rotor that combines robust construction with exceptional performance, the Wilwood HD36 Spec-37 2-Piece Rotor is an outstanding choice. Upgrade your braking system with this high-quality component 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 HD36 Spec-37 2-Piece Rotor - Left Hand

Ensure optimal braking balance with the Wilwood HD36 Spec-37 2-Piece Rotor, specifically designed for the left-hand side of your vehicle. This rotor features a 12.19-inch diameter, a .810-inch thickness, and an 8 on 7.00-inch bolt circle, providing a precise fit for compatible braking systems.

Engineered for Extreme Conditions

Crafted from Wilwood's exclusive Spec-37 iron alloy, these HD36 rotors are engineered to withstand the rigors of high-performance driving and extreme temperatures. This advanced alloy offers superior resistance against:

  • Intense heat buildup
  • Distortion and warping under load
  • Cracking and premature wear

The material science behind this alloy is rooted in technology developed for extreme-duty military specification rotors, ensuring exceptional reliability. The HD Series preparation includes meticulous full detail machining and smooth pad contact faces, designed for consistent braking without the use of slots.

Key Features:

  • Extreme Temperature Resistance: Spec-37 alloy handles high heat effectively.
  • Enhanced Durability: Resists warping, cracking, and wear for longer life.
  • Consistent Performance: Smooth pad surfaces ensure reliable stopping power.
  • Precision Machining: Built to strict tolerances for flatness and run-out.

For a left-hand side rotor that combines robust construction with exceptional performance, the Wilwood HD36 Spec-37 2-Piece Rotor is an outstanding choice. Upgrade your braking system with this high-quality component 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 HD36 Spec-37 2-Piece Rotor - Left Hand

Ensure optimal braking balance with the Wilwood HD36 Spec-37 2-Piece Rotor, specifically designed for the left-hand side of your vehicle. This rotor features a 12.19-inch diameter, a .810-inch thickness, and an 8 on 7.00-inch bolt circle, providing a precise fit for compatible braking systems.

Engineered for Extreme Conditions

Crafted from Wilwood's exclusive Spec-37 iron alloy, these HD36 rotors are engineered to withstand the rigors of high-performance driving and extreme temperatures. This advanced alloy offers superior resistance against:

  • Intense heat buildup
  • Distortion and warping under load
  • Cracking and premature wear

The material science behind this alloy is rooted in technology developed for extreme-duty military specification rotors, ensuring exceptional reliability. The HD Series preparation includes meticulous full detail machining and smooth pad contact faces, designed for consistent braking without the use of slots.

Key Features:

  • Extreme Temperature Resistance: Spec-37 alloy handles high heat effectively.
  • Enhanced Durability: Resists warping, cracking, and wear for longer life.
  • Consistent Performance: Smooth pad surfaces ensure reliable stopping power.
  • Precision Machining: Built to strict tolerances for flatness and run-out.

For a left-hand side rotor that combines robust construction with exceptional performance, the Wilwood HD36 Spec-37 2-Piece Rotor is an outstanding choice. Upgrade your braking system with this high-quality component from GGCRACING.

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