H&R R20040975 2.0" ID Linear Race Spring 4" Length 975 lbs/in

The H&R R20040975 is a 2.0" inner diameter, 4" free length, 975 lbs/in linear rate race coil spring, engineered for competitive motorsport and high-performance coilover applications. Sold as a single spring, it is designed to be used with compatible 2.0" I.D. coilover sleeves and perches.

Premium German Engineering:

• Material: Crafted from special lightweight (hf) 54SiCr6 spring steel for unrivaled tensile strength and resilience
• Inner Diameter: 2.0" (50.8 mm)
• Free Length: 4" (101.6 mm)
• Spring Rate: 975 lbs/in (linear)
• Weight Savings: On average 15% lighter than competitors' springs at the same spring rate
• Increased Travel: Provides approximately 10% more travel than comparable competing springs
• Shot-Peened: Each spring is shot-peened to increase fatigue life by more than 200%
• Manufactured In: Germany, in H&R's ISO 9001 certified production facility
• 100% Tested: Every spring is individually tested before leaving the factory

H&R 2.0" I.D. Race Springs are constructed from an extremely high tensile strength wire alloy, allowing for a thinner wire profile without sacrificing load capacity. This results in a lightweight, compact spring that delivers precise, consistent performance under demanding race conditions. Compatible with most 2.0" I.D. coilover systems used in circuit racing, autocross, time attack, and track day applications.