Hyperco BS Series Bump Stop Spring

The Hyperco BS Series Bump Stop Spring (also called a bump spring) is a precision race spring made in the USA. It works alongside your primary spring. The primary spring gives a soft, compliant initial rate so the car settles to the ride height you want. The bump spring then adds its own rate to hold a steady dynamic ride height on track. It is widely used in circle track racing and other motorsports.

Key Features:

• Works in a nested arrangement with the primary spring. The combined rate is higher than either spring alone.
• Made from high tensile chrome silicon steel for durability.
• Double shot-peened for fatigue resistance.
• Blue finish for easy identification.
• Designed to fit standard hardware.
• Tight rate linearity tolerances through the working range, with more usable deflection.
• Keeps its free length and rate over a long service life.

Hyperco has built high-performance suspension springs for motorsports since the 1950s. The BS Series gives racers a consistent, repeatable way to fine-tune handling and control ride height.