H&R RF080-36-325LBS 36mm ID Race Spring 3.15in Free Length 325 lbs/in

The H&R RF080-36-325LBS is a high-performance 36mm inside diameter (I.D.) race spring engineered for serious motorsport competition. With a 325 lbs/inch spring rate and a 3.15-inch free length, this spring delivers precise, consistent performance in demanding track environments.

Crafted from special lightweight 54SiCr6 silicon-chrome spring steel using high-fatigue (hf) wire processing, H&R race springs achieve an average of 15% less weight and 10% more travel compared to conventional springs at the same spring rate. Each spring is manufactured in Germany to strict tolerances for consistent rate accuracy and long-term durability under extreme conditions.

Key Specifications:

• Part Number: RF080-36-325LBS
• Inside Diameter (I.D.): 36mm
• Free Length: 3.15 inches
• Spring Rate: 325 lbs/inch
• Block Height: 1.3 inches
• Load at Block: 600 lbs
• Weight: 0.4 lbs
• Material: 54SiCr6 high-fatigue silicon-chrome spring steel

Key Features:

• Factory pre-blocked so springs will never set or sag over time
• Lightweight construction — approximately 15% lighter than conventional springs at equivalent rates
• Increased travel — approximately 10% more travel than competing springs
• Produced to strict tolerances for consistent, repeatable spring rates
• Designed for road racing, time attack, autocross, and custom motorsport applications
• Compatible with H&R 36mm I.D. tender and helper springs for fine-tuning suspension setup

The H&R 36mm I.D. Race Spring line spans free lengths from 2.76 to 5.12 inches and rates from 72 to 686 lbs/inch, allowing precise matching to your coilover application. Complementary tender springs are available for additional suspension tuning flexibility.