Eibach ERS Race Main Spring Length 7" Inside Diameter 2.5" Rate Eibach Race Off Road Dia. in Len: in Rate: lbs in Eibach ERS Coilover Coil Spring Kit 2.25 in. ID 7.00 in. Length 3.56 in ERS Linear Tender Spring Dia. 3.00 in Len: 4.72 in Rate: 50 lbs in Eibach 0175.250.0150, One Black Steel Spring 2.5In Id Tender Linear Eibach 0175.250.0150 Spring 2.5In Id Tender Linear Coil Spring, Tender. 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