H&R 36mm I.D. Race Springs are crafted from special lightweight (hf) 54SiCr6 spring steel with multiple lengths and rates for optimal tuning and setup.

The H&R Motorsport line of 36mm main and tender springs includes main springs ranging from 2.76” to 5.12” in length, and 72 lbs/inch to 686 lbs/inch spring rates. Tender Springs are available for optimal fine tuning and performance.

TENDER SPRINGS
H&R 36mm I.D. Tender Springs are made of trapezoidal (flat rather than round) spring wire for a low block height and maximum travel. These springs are designed for demanding motorsport environments, and, like all H&R springs, have been pre-blocked at the factory so they will never set or sag.