YSS VMX mono shock absorber MX456-540TRC-01-85 for Yamaha IT 250 80-81. Length 540mm. YSS suspension VMX series are a unique development for vintage MX racing bikes. The MX456-TRC Topline series are separated Nitro gas supported shock absorbers with separate reservoir. The offered shock is specifically developed for your IT, rider weight between 65 and 95 KG. Adjustable on spring-preload, rebound damping and separated single compression damping. The shock is fully serviceable.