YSS Gas Emulsion Mono-shock for Aprilia SR50 ditech with Piaggio engine. 

YSS Eco Line represents a high-quality series of gas-charged motorcycle rear shock absorbers designed to improve handling, stability, and rider comfort over stock suspension. These durable shocks feature adjustable spring preload, making them a cost-effective upgrade.

YSS world class suspension is a leading company in the development and production of suspensions worldwide, focused on continuous innovation, with the constant aim of offering quality products and advanced technology to ensure the best performance.