H&R RF070-36-090 36mm ID Race Spring 515 lbs/in 2.76in Free Length

The H&R RF070-36-090 is a high-performance 36mm inner diameter race spring engineered for competitive motorsport applications. Manufactured in Germany from special lightweight 54SiCr6 silicon-chrome spring steel, this spring delivers exceptional strength at reduced weight — a critical advantage in race and track environments.

H&R's 36mm I.D. race springs are pre-blocked at the factory, meaning they will never set or sag under repeated high-load use. The comprehensive range of lengths and spring rates allows precise suspension tuning for coilover setups used in circuit racing, rally, and performance driving events.

Key Specifications:

• Part Number: RF070-36-090
• Inner Diameter: 36mm
• Free Length: 2.76 inches
• Spring Rate: 515 lbs/inch
• Block Height: 1.3 inches
• Load at Block: 749 lbs
• Weight: 0.42 lbs (per spring)

Key Features:

• Crafted from lightweight 54SiCr6 spring steel for superior strength-to-weight ratio
• Pre-blocked at the factory — will not set or sag over time
• Engineered for demanding motorsport environments and coilover suspension systems
• Available in a wide range of spring rates for precise setup and fine-tuning
• Manufactured in Germany to strict H&R motorsport quality standards

The H&R RF070-36-090 is sold individually and is designed for use with compatible 36mm I.D. coilover platforms. It pairs with H&R's 36mm tender springs for advanced dual-spring suspension configurations.