Eibach ERS 3.00 in. ID Torsion Release Bearing (TRB300)Eibach ERS 3. 00 in. ID Torsion Release Bearing Applicable for most vehicles with a 3. 00 inch inside diameter torsion spring Part #: TRB300 Overview The Eibach ERS 3. 00 in. ID Torsion Release Bearing is a high quality component designed to enhance the performance and reliability of your vehicle's suspension system. Engineered by Eibach, a renowned name in automotive suspension technology, this torsion release bearing helps reduce torsional binding,