Progressively wound fork springs from YSS in a firmer design than the original. The YSS fork springs are made from high-quality silicon spring steel. This allows for a reduction in wire thickness, making the spring more active and slimmer, while effectively preventing torsion of the spring.To minimize noise and improve oil flow in the fork, the springs are fully polished and ground at both the top and bottom.The delivery includes 2 springs for a complete fork conversion.Technical Data:Spring Type:   Progressive Length:   540 mmDiameter 1:   39 mmSpring Rate 1:   9.0 N/mmSpring Rate 2:   11.5 N/mmAir Chamber Left:   160 mmAir Chamber Right:   160 mmRecommended Viscosity:   7.5W Manufacturer:   YSS

Progressive Springs for Fork and Shock Absorber for BMW F 800 GT (also ESA) 2013 - 2018 These progressive replacement springs are perfectly tuned to the fork and shock absorber of your motorcycle. This results in better coordination for the demands of motorcycle touring. Additionally, you will experience significantly improved responsiveness and higher reserves in the limit range. Scope of delivery: - Fork springs. - Replacement spring for original shock absorber. - including detailed installation instructions. - suitable fork oil. - Paste to improve the sliding properties of the inner tubes. Our recommendation: Have the conversion carried out by a specialist workshop. Do you have further questions? We are happy to advise you personally, please contact us. Email: [email protected] Phone +49 (0)7728-9279-1555 Please use our suspension check form and send us the completed form.