A single rear YSS oil shock absorber for the GILERA RUNNER 50-125. It has spring preload. The company TSK Factory Co LTD was founded in 1988 in the Bangplee industrial area of Thailand. It began its activity building motorcycle suspension on a small scale "under" the trade name YSS (Your Supreme Suspension). In 1994 the company was completely reorganised by Thai engineers with new technological support, new machinery and quality standards on a par with the Japanese factories. T.S.K. Factory Co LTD has recognised the importance of quality in its products and for that reason the company's management focused its attention on producing quality products, on continuous improvement and development as well as on the programme for avoiding defective products. The result of the above was that in 2001 the TSK Factory Co LTD plant achieved the following certifications: QS9000, TUV, ISO