H&R RF070-36-250LBS ID Race Spring lbs/in Free Length - 36mm 250 2.83in

The H&R RF070-36-250LBS is a single 36mm inside diameter race spring featuring a 250 lbs/inch spring rate and a 2.83" free length. Designed for serious motorsport applications including road racing, time attack, autocross, and custom competition builds, this spring delivers precise, consistent performance under extreme track conditions.

Key Features:

• Spring Rate: 250 lbs/inch (250 LBS)
• Inside Diameter (I.D.): 36mm
• Free Length: 2.83 inches
• Block Height: 1.22 inches
• Load at Block: 405 lbs
• Material: Special lightweight (hf) 54SiCr6 spring steel — engineered for high tensile strength with reduced wire thickness
• Weight: 0.29 lbs per spring
• Pre-blocked at the factory — will never set or sag under competition use

About H&R 36mm I.D. Race Springs:

Manufactured in Germany to strict tolerances, H&R Race Springs are part of the H&R Motorsport program and are crafted from lightweight 54SiCr6 spring steel. Compared to conventional springs of the same rate, they offer reduced weight and exceptional durability. The 36mm main spring lineup spans from 2.76" to 5.12" in free length and 72 to 686 lbs/inch in spring rate, allowing precise suspension tuning across a wide range of setups. Compatible tender and helper springs are available separately for fine-tuning.

Sold individually (per spring).