H&R 2.50" I.D. Race Springs 54SiCr6 Lightweight High Tensile Steel

H&R 2.50" I.D. Race Springs — 54SiCr6 Lightweight High Tensile Steel High-performance race springs engineered in Germany. H&R 2.50" I.D. Race Springs are forged from special lightweight 54SiCr6 (hf) spring steel, delivering exceptional tensile strength that allows a thinner, lighter coil without sacrificing durability. Key Benefits Lightweight: Approximately 15% lighter than comparable springs for reduced unsprung mass. Increased travel: About 10% more travel than competing spring lines for improved suspension articulation. Precision manufacturing: Advanced German materials and production ensure consistent spring rates and long-term performance. Pre-blocked: Factory pre-blocked to prevent setting or sagging under race conditions. Product Details Inner diameter: 2.50" (60 mm) Material: 54SiCr6 lightweight high-tensile spring steel Main spring lengths: 80 mm to 300 mm (approx. 3.15"–11.8") Spring rates: 25 N/mm to 700 N/mm (convert with N/mm × 5.709 = lb/in) Tender Springs H&R tender springs use trapezoidal (flat) wire for a lower block height and maximum travel—ideal for demanding motorsport setups. Available in a broad selection of lengths and rates to fine-tune balance and response. Applications Designed for professional motorsport and high-performance street/track cars, including Euro-spec models like Porsche GT3. Hundreds of main and tender spring options provide the tuning flexibility required for cornering, traction, and ride control.