The airsal cylinder sport kit 72.5Cc 47mm for mbk magnum 51 50 1987-1998 is part of the latest collection from airsal.Features: 72.5Cc aluminium hard coated bore cylinder kit from airsal unlike cast iron cylinders, the aluminium cylinder offers much better heat dissipation making these kits less susceptible to wear or piston failure airsal sports kits improves power early on and has very good torque curve supplied as per image with barrel, piston, ring, pin, clips and required gasket. Original head can be used up-rated carb or original carb up jetted is required specifications: product name: cylinder kit units: kit to fit: mbk magnum 51 50 1987 racing european models mbk magnum 51 50 1987 european models mbk magnum 51 50 1988 racing european models mbk magnum 51 50 1988 european models mbk magnum 51 50 1989 racing european models mbk magnum 51 50 1989 european models mbk magnum 51 50 1990 mag max european models mbk magnum 51 50 1991 mag max european models mbk magnum 51 50 1992 mag max european models mbk magnum 51 50 1996 racing xr european models mbk magnum 51 50 1997 racing xr european models mbk magnum 51 50 1998 racing xr european models mbk rock 51 50 1989 racing european models mbk rock 51 50 1990 racing european models mbk rock 51 50 1991 racing european models manufacturer part number: 02140847view all airsal. View all parts and spares.