Eibach ERS Coil Over Spring Single Spring 9.00 inch L x 2.25 inch dia x Eibach Race Springs Coilover, Off Road, Race, Platinum and More Springs Eibach Platinum Barrel Spring Kit P1600.2530.0050 Eibach Barrel Main Single Coil Spring 325 lbs in Rate. 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 1200. 2530. 0325 Part Name Coil Spring Length 12 in. Diameter 2. 50 I. D. Spring Rate 325 lbs in Block Height 3. 94 in. Travel 8. 07 in. Block Load 2519 lbs. Color Red Notes Without QuadraSteer