Motorcycle Engine Seal For 950 990 Superduke Supermoto Superenduro SMT Fit For 950 Adventure Superenduro Superduke 990 Adventure Supermotard Superduke 990 SMT motorcycles cut contour bolt holes match front cylinder base for direct installation without oil multi-layer composite material stops compression leakage under load riding Flexible compressible structure offsets thermal expansion to maintain stable tight sealing for long distance adventure travel coating from engine to extend life in harsh riding conditions