Bolt of telescope spring, UPPER (MZA) - Simson Can be used for: Simson S50, S51, S53, S70, S83, SC-050, SR50, SR80, TS050 The product of the MZA, which is the exclusive holder of the SIMSON brand. GPSR Contact: MZA Meyer–Zweiradtechnik GmbH, Baunsbergstr. 60-62, 34131, Kassel, Germany, gpsr@mza.de