Eibach Shock Spring Tender 0600.300.0150S Silver 6" L 3" I.D. 150 LBS ERS Linear Main Spring Dia. 3.00 in Len: 7.00 in Rate: 250 lbs in ERS Linear Tender Spring Dia. 3.00 in Len: 4.72 in Rate: 50 lbs in All Makes All Models Parts E102500325 Eibach ERS Series Standard. 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 Provides a Softer Initial Rate When Paired with a Main Spring Available in Linear or Progressive Rates Each Spring Individually Tested Highest Linearity and Guaranteed Consistency Specifications Part Number 0300. 188. 0033 Part Name Coil Spring Length 3 in. Diameter 1. 88 I. D. Spring Rate 33 lbs in Block Height 0. 75 in. Travel 2. 24 in. Block Load 99 lbs. Spring Type Linear Individual Motorsport Spring Notes Without QuadraSteer