Hyperco 18Y0375-99 Front Coil Spring - 5in ID, 9.9in Tall, 375 lb/in Rate

SKU: BJRF_18Y0375-9.9

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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

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Sizing & Fit

About Hyperco

Hyperco engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Hyperco lineup with fast shipping and expert fitment support — order with confidence.

Unleash Front End Agility with Hyperco 18Y0375-99 Coil Spring

Unlock the full potential of your vehicle's front suspension with the Hyperco 18Y0375-99 Front Coil Spring. This conventional coil spring is meticulously engineered to provide an aggressive 375 lb/in spring rate, delivering unparalleled front-end control, reduced body roll, and razor-sharp steering response. It's the ideal upgrade for serious track enthusiasts and performance drivers who demand the absolute best in suspension tuning. Constructed from premium-grade steel, this spring offers exceptional resilience and maintains its rate consistently under the most extreme conditions. The sleek silver powder coat ensures long-lasting durability and resistance to environmental degradation.

Advanced Performance Features:

  • Aggressive Spring Rate: A 375 lb/in rate provides maximum front-end stability and precision for competitive driving.
  • Superior Durability: Made from high-quality steel to resist fatigue and maintain performance over time.
  • Enhanced Protection: Silver powder coat finish offers robust defense against corrosion and impacts.
  • Precision Fitment: Engineered for exact specifications, ensuring seamless integration and optimal function.

Product Details:

  • Part Number: 18Y0375-99
  • Type: Conventional Coil Spring
  • Outer Diameter (OD): 5 inches
  • Length: 9.9 inches
  • Spring Rate: 375 lb/in
  • Position: Front
  • Material: High-Strength Steel
  • Finish: Silver Powder Coat

For those who push the limits, the Hyperco 18Y0375-99 coil spring is a critical component for achieving a highly responsive and stable front suspension, making every turn more precise and confident.

About Hyperco

Hyperco engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Hyperco lineup with fast shipping and expert fitment support — order with confidence.

Unleash Front End Agility with Hyperco 18Y0375-99 Coil Spring

Unlock the full potential of your vehicle's front suspension with the Hyperco 18Y0375-99 Front Coil Spring. This conventional coil spring is meticulously engineered to provide an aggressive 375 lb/in spring rate, delivering unparalleled front-end control, reduced body roll, and razor-sharp steering response. It's the ideal upgrade for serious track enthusiasts and performance drivers who demand the absolute best in suspension tuning. Constructed from premium-grade steel, this spring offers exceptional resilience and maintains its rate consistently under the most extreme conditions. The sleek silver powder coat ensures long-lasting durability and resistance to environmental degradation.

Advanced Performance Features:

  • Aggressive Spring Rate: A 375 lb/in rate provides maximum front-end stability and precision for competitive driving.
  • Superior Durability: Made from high-quality steel to resist fatigue and maintain performance over time.
  • Enhanced Protection: Silver powder coat finish offers robust defense against corrosion and impacts.
  • Precision Fitment: Engineered for exact specifications, ensuring seamless integration and optimal function.

Product Details:

  • Part Number: 18Y0375-99
  • Type: Conventional Coil Spring
  • Outer Diameter (OD): 5 inches
  • Length: 9.9 inches
  • Spring Rate: 375 lb/in
  • Position: Front
  • Material: High-Strength Steel
  • Finish: Silver Powder Coat

For those who push the limits, the Hyperco 18Y0375-99 coil spring is a critical component for achieving a highly responsive and stable front suspension, making every turn more precise and confident.

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