H&R is known in the motorsport scene such FIA-World Rally, Formula 1, GP2 and DTM. It is no surprise to offer special springs for hardcore race enthusiasts. H&R 2.5” race springs has 2.5” inside diameter which make them perfect fit for the US racing scene.
Race springs are available as main spring or a helper spring (tender).
Main Springs:
The main springs are made of extremely solid spring steel. This leads to a reduction of weight and more travel for a given spring rate than competitive springs made of usual spring steel. The main spring has a linear characteristic and settles the main characteristics as well as progression of the end spring rate.
By choosing suitable bump stops the block setting of the main spring must be avoided in use.
Helper Springs:
Made of special trapezoid material which resists long lasting solid stress can also be used. They can either increase the rebound travel or the response of the spring system, depending on whether the helper springs are already closed and have more travel, or if they can still influence the rate of the chosen main spring.
To harmonize the intersection of the main and helper spring there are also four different kinds of progressive helper springs in stock.
