H.T.S.R. HEAD (High Turbolence Squish Racing) Heads with high turbolence concentric combustion chamber, squish set during the dynamometrical brake adjusting, re-calculated linings and cooling surfaces, made of high silicon content aluminium, pressure melted, worked on highest precision working centres, with anti-detonating and anti-oxidationtreatment on the surface.

Technical features Material: special die-cast aluminium alloy. Geometry of heat exchange surfaces recalculated and increased. Machining: numerically controlled high precision machines with diamond tools. Viton head gasket. Hemispheric combustion chamber with centred squish and spark plug.