Hyperco Conventional Coil Spring 5.5in ID 9.5in Tall 300lb Rate — Performance Suspension

SKU: BJRF_18Z0300
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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 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.

Hyperco 5.5in ID 9.5in Tall 300lb Coil Spring

Improve your vehicle's suspension compliance and handling with the Hyperco 5.5in ID 9.5in Tall 300lb conventional coil spring. This spring is specifically engineered to provide a consistent 300lb rate, offering the ideal balance of support and travel for various front-end configurations. Hyperco springs are the choice of professionals who require exact spring rates to dial in their chassis for specific track conditions, ensuring that your suspension performs exactly as intended every time you hit the asphalt.

Key Features

  • Spring Rate: 300 lb/in
  • Inside Diameter: 5.5 inches
  • Free Length: 9.5 inches
  • Finish: Silver Powder Coat
  • Construction: High-strength steel
  • Design: Conventional coil

The 5.5-inch inside diameter makes this spring compatible with a wide range of racing coilover kits, providing flexibility for custom suspension builds. Finished in a durable silver powder coat, this spring is designed to withstand the harsh conditions of the track while maintaining its structural integrity. By choosing a 300lb rate, you gain better control over weight transfer during acceleration and braking, leading to improved driver feedback and faster lap times. Hyperco's dedication to manufacturing excellence means you can trust these springs to resist premature wear and maintain their specified rate throughout their service life. Whether you are a weekend warrior or a competitive racer, upgrading your suspension components is the most effective way to enhance your driving experience. Find the best performance parts at GGCRACING.

Product Details

Product Description
Part Numbers
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.

Hyperco 5.5in ID 9.5in Tall 300lb Coil Spring

Improve your vehicle's suspension compliance and handling with the Hyperco 5.5in ID 9.5in Tall 300lb conventional coil spring. This spring is specifically engineered to provide a consistent 300lb rate, offering the ideal balance of support and travel for various front-end configurations. Hyperco springs are the choice of professionals who require exact spring rates to dial in their chassis for specific track conditions, ensuring that your suspension performs exactly as intended every time you hit the asphalt.

Key Features

  • Spring Rate: 300 lb/in
  • Inside Diameter: 5.5 inches
  • Free Length: 9.5 inches
  • Finish: Silver Powder Coat
  • Construction: High-strength steel
  • Design: Conventional coil

The 5.5-inch inside diameter makes this spring compatible with a wide range of racing coilover kits, providing flexibility for custom suspension builds. Finished in a durable silver powder coat, this spring is designed to withstand the harsh conditions of the track while maintaining its structural integrity. By choosing a 300lb rate, you gain better control over weight transfer during acceleration and braking, leading to improved driver feedback and faster lap times. Hyperco's dedication to manufacturing excellence means you can trust these springs to resist premature wear and maintain their specified rate throughout their service life. Whether you are a weekend warrior or a competitive racer, upgrading your suspension components is the most effective way to enhance your driving experience. Find the best performance parts at GGCRACING.

Product Details

Product Description

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.

Hyperco 5.5in ID 9.5in Tall 300lb Coil Spring

Improve your vehicle's suspension compliance and handling with the Hyperco 5.5in ID 9.5in Tall 300lb conventional coil spring. This spring is specifically engineered to provide a consistent 300lb rate, offering the ideal balance of support and travel for various front-end configurations. Hyperco springs are the choice of professionals who require exact spring rates to dial in their chassis for specific track conditions, ensuring that your suspension performs exactly as intended every time you hit the asphalt.

Key Features

  • Spring Rate: 300 lb/in
  • Inside Diameter: 5.5 inches
  • Free Length: 9.5 inches
  • Finish: Silver Powder Coat
  • Construction: High-strength steel
  • Design: Conventional coil

The 5.5-inch inside diameter makes this spring compatible with a wide range of racing coilover kits, providing flexibility for custom suspension builds. Finished in a durable silver powder coat, this spring is designed to withstand the harsh conditions of the track while maintaining its structural integrity. By choosing a 300lb rate, you gain better control over weight transfer during acceleration and braking, leading to improved driver feedback and faster lap times. Hyperco's dedication to manufacturing excellence means you can trust these springs to resist premature wear and maintain their specified rate throughout their service life. Whether you are a weekend warrior or a competitive racer, upgrading your suspension components is the most effective way to enhance your driving experience. Find the best performance parts at GGCRACING.

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