Betor rear shocks (Sammy Miller model) 340 mm hard springs

Rear Sammy Miller shocks, manufactured specially by Betor. 34 cm (13.4) long with light springs, gas assisted damping, six way adjustable preload. Recommended for more than 85 / 90kg drivers. IMPORTANT : Be carrefull, those chocks are totally redesigned to Sammy's specification and are not the same internally, than some sold sometimes on Ebay...