ERS Linear Main Spring Dia. in Len: in Rate: lbs in Eibach Race Off Road Dia. in Len: in Rate: lbs in R10023 EIBACH Single Spring ERL (OE Replacement) Coil spring Front Axle Barrel Main Spring Dia. 2.50 in Len: 10.00 in Rate: 350 lbs in Eibach Race Off Road Dia. 2.50 in Len: 8.00 in Rate: 150 lbs in Eibach Race Springs Coilover, Off Road, Race, Platinum and More Springs. Eibach's ERS line has evolved over the years to be the world's most prominent, comprehensive and superior Race Spring System. Eibach Race Springs are all manufactured in series production, often repeated, with a strong manufacturing experience. Thus, Eibach constantly achieves the most linear spring characteristic (rate) while maintaining the lowest tolerances and the highest quality in the industry. Eibach's ERS line has evolved over the years to be the world's most prominent, comprehensive and superior Race Spring System. Eibach Race Springs are all manufactured in series production, often repeated, with a strong manufacturing experience. Thus, Eibach constantly achieves the most linear spring characteristic (rate) while maintaining the lowest tolerances and the highest quality in the industry. Standard Features Eibach Barrel Main Spring for Increased Travel and Reduced Weight Highest Linearity and Guaranteed Consistency Ultra Lightweight for Reduced Unsprung Mass Each Spring Individually Tested Maximum Travel in Combination with Smallest Block Heights Specifications Part Number 1000. 2530. 0100 Part Name Coil Spring UPC 00803050520388 Length 10 in. Diameter 2. 50 I. D. Spring Rate 100 lbs in Block Height 2. 32 in. Travel 7. 68 in. Block Load 768 lbs. Color Red Notes Without QuadraSteer