11" x 5 1/2 O.D. Rear One End Pigtail/ One End Closed/ 175 lbs.

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Springs Sold Individually

Conventional Springs are high-performance, aftermarket suspension springs primarily used in motorsports and motor racing. The OD (outer diameter) size and free length, along with Hyperco’s Dynamic Travel Response™ spring design, allow for optimization of the total vehicle performance on many Circle Track vehicles and applications.

Unlike Coil-Over Springs that are available in a multitude of free lengths, Conventional Springs are limited in their free length offerings, often as a result of the sanctioning bodies and rules. The Engineers at Hyperco decided to analyze the dynamic characteristics essential to Conventional Spring performance. That data resulted in the development of the Dynamic Travel Response spring design concept.

Working within the limitations and rules, the Dynamic Travel Response design allows all springs to exceed the performance requirements for travel and rate linearity, and is still designed with significantly less physical weight.

Key Benefits of Conventional Springs

  • More usable deflection
  • Less weight than standard suspension springs
  • 2% rate linearity tolerance from 20% to 60% of deflection
  • 4% rate linearity tolerance from 61% to 80% of deflection
  • Designed to fit all standard hardware
  • Maintain free length and rate throughout a near infinite operational life

Hypercoils are manufactured from the highest quality chrome silicone steel and high tensile chrome silicone steel available in the world.

The life of a suspension coil is directly related to the design and materials used. Hypercoils are designed to be as light as possible with maximum deflection and at the same time endure the stresses of the extreme conditions common to motor racing. Because raw materials are ordered in mill-runs and not ordered from a mill's regular inventory we are not constrained to designing from stock wire sizes. Having a larger range of wire sizes available allows our engineers to be design specific for each application. Hypercoils are designed and manufactured to retain their rate and free length for several seasons. A properly designed and manufactured spring will not lose free length under normal racing applications.

Part # SNP11-175