H&R 2.5in ID Race Springs Lightweight 54SiCr6 Steel High Tensile Strength

H&R 2.5in ID Race Springs — Lightweight 54SiCr6 High Tensile Steel Precision German engineering for motorsport and road performance. H&R 2.50" I.D. Race Springs are crafted from special lightweight (hf) 54SiCr6 spring steel for exceptional strength-to-weight ratio and durability. Lightweight construction: ~15% lighter than comparable springs for reduced unsprung mass. Greater travel: Approximately 10% more travel vs competitors at the same spring rate. High tensile alloy: Thinner wire with superior tensile strength improves response and longevity. Pre-blocked: Factory pre-blocked so springs will not set or sag under race conditions. Tender spring option: Trapezoidal (flat) wire tender springs with low block height for maximum travel and improved progressive behavior. Available in a wide range of main spring lengths (6"–18") and spring rates to suit custom tuning, coilover builds, and demanding motorsport setups. The H&R 60mm I.D. Race program extends coverage to Euro-spec models such as Porsche GT3 with hundreds of main and tender spring combinations — lengths from 80mm to 300mm and rates from 25 N to 700 N. Ideal for: Track-focused builds, club racing, coilover tuning, and high-performance street/track vehicles seeking lighter, more responsive springs with increased travel and proven German quality.