Hyperco Conventional Coil Spring 350 lb/in Rate 5in ID 11in Tall — Universal Rear Suspension

SKU: BJRF_18SN-350
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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 350 lb/in Conventional Coil Spring

For demanding applications where maximum rear-end stability is required, the Hyperco 350 lb/in conventional coil spring is the ultimate choice. Featuring a 5-inch inside diameter and 11-inch free length, this spring provides the high-rate support necessary for aggressive track driving and heavy-duty performance builds. Hyperco is the industry leader in suspension technology, and this spring reflects their dedication to precision, durability, and consistent performance under extreme conditions.

Technical Specifications

  • Spring Rate: 350 lb/in
  • Inside Diameter: 5 inches
  • Free Length: 11 inches
  • Material: High-tensile steel
  • Finish: Durable blue powder coat
  • Application: Universal rear suspension

The 350 lb/in spring rate is engineered to minimize suspension travel and body roll, providing the driver with precise feedback and improved cornering grip. By utilizing high-quality steel and advanced manufacturing processes, Hyperco ensures that this spring maintains its rate integrity over countless cycles, preventing the common issue of spring sag found in lower-quality parts. The durable blue powder coat finish protects the steel from corrosion, ensuring your suspension looks as good as it performs. This spring is a versatile option for various racing platforms, including drag racing, autocross, and road racing, where a stiffer rear setup is essential for power delivery and handling. When you choose Hyperco, you are choosing the same technology that powers winning race teams across the globe. Enhance your vehicle's performance and stability with this premium component. Get the best in suspension engineering 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 350 lb/in Conventional Coil Spring

For demanding applications where maximum rear-end stability is required, the Hyperco 350 lb/in conventional coil spring is the ultimate choice. Featuring a 5-inch inside diameter and 11-inch free length, this spring provides the high-rate support necessary for aggressive track driving and heavy-duty performance builds. Hyperco is the industry leader in suspension technology, and this spring reflects their dedication to precision, durability, and consistent performance under extreme conditions.

Technical Specifications

  • Spring Rate: 350 lb/in
  • Inside Diameter: 5 inches
  • Free Length: 11 inches
  • Material: High-tensile steel
  • Finish: Durable blue powder coat
  • Application: Universal rear suspension

The 350 lb/in spring rate is engineered to minimize suspension travel and body roll, providing the driver with precise feedback and improved cornering grip. By utilizing high-quality steel and advanced manufacturing processes, Hyperco ensures that this spring maintains its rate integrity over countless cycles, preventing the common issue of spring sag found in lower-quality parts. The durable blue powder coat finish protects the steel from corrosion, ensuring your suspension looks as good as it performs. This spring is a versatile option for various racing platforms, including drag racing, autocross, and road racing, where a stiffer rear setup is essential for power delivery and handling. When you choose Hyperco, you are choosing the same technology that powers winning race teams across the globe. Enhance your vehicle's performance and stability with this premium component. Get the best in suspension engineering 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 350 lb/in Conventional Coil Spring

For demanding applications where maximum rear-end stability is required, the Hyperco 350 lb/in conventional coil spring is the ultimate choice. Featuring a 5-inch inside diameter and 11-inch free length, this spring provides the high-rate support necessary for aggressive track driving and heavy-duty performance builds. Hyperco is the industry leader in suspension technology, and this spring reflects their dedication to precision, durability, and consistent performance under extreme conditions.

Technical Specifications

  • Spring Rate: 350 lb/in
  • Inside Diameter: 5 inches
  • Free Length: 11 inches
  • Material: High-tensile steel
  • Finish: Durable blue powder coat
  • Application: Universal rear suspension

The 350 lb/in spring rate is engineered to minimize suspension travel and body roll, providing the driver with precise feedback and improved cornering grip. By utilizing high-quality steel and advanced manufacturing processes, Hyperco ensures that this spring maintains its rate integrity over countless cycles, preventing the common issue of spring sag found in lower-quality parts. The durable blue powder coat finish protects the steel from corrosion, ensuring your suspension looks as good as it performs. This spring is a versatile option for various racing platforms, including drag racing, autocross, and road racing, where a stiffer rear setup is essential for power delivery and handling. When you choose Hyperco, you are choosing the same technology that powers winning race teams across the globe. Enhance your vehicle's performance and stability with this premium component. Get the best in suspension engineering at GGCRACING.

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