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

H&R 2.5" I.D. Race Springs — Lightweight 54SiCr6 High-Tensile Alloy Engineered in Germany for motorsport and track use, the H&R 2.50" I.D. Race Springs are manufactured from special lightweight (hf) 54SiCr6 spring steel . Using extremely high-tensile wire allows a thinner section for reduced weight without sacrificing strength. Key Benefits Lightweight — on average 15% lighter than competitors for better unsprung mass and response. Increased travel — about 10% more travel for improved suspension tuning range. High tensile strength — thin wire construction with exceptional durability under race conditions. Pre-blocked — factory pre-blocked to prevent setting or sag over time. Options & Applications Main springs available in lengths from 6" to 18" with a wide selection of rates. Tender springs use trapezoidal (flat) wire for a low block height and maximum travel — ideal for demanding motorsport setups. The 60mm I.D. program extends coverage for Euro-spec cars including Porsche GT3, offering hundreds of main and tender spring combinations. Technical Range Main spring lengths: 80mm–300mm Spring rates: 25 N–700 N (N/mm × 5.709 = lb/in) Optimize ride, reduce weight, and extend suspension travel with H&R 2.5" I.D. Race Springs — precision materials and German engineering for competitive tuning.