The service kit piston BIHR is a pack that combines the need for reconditioning your high-engine: Casted Piston, Axis, Segment(s) and VertexRoaded Keyboard Centauro Needle Cage (2 time only) Piston size (Ø mm): DA: 47,44 DB: 47,45 DC: 47,46 DD: 47,47