CYLINDER HEAD RACING FOR YAMAHA CYGNUS, BWS 5ML 4V
Brand: NARAKU
4-valve racing cylinder head for use on big bore cylinders for Yamaha 5ML enginesThe cylinder head features stiffer valves and springsThe inlet valves have a diameter of 23mm and the exhaust valves 21mmInlet connection: 27mm, exhaust has a cross section of 26mmNot for 125cc original cylinders.
https://shopping.truda.io/product/cylinder-head-racing-for-yamaha-cygnus-bws-5ml-4v
4-valve racing cylinder head for use on big bore cylinders for Yamaha 5ML enginesThe cylinder head features stiffer valves and springsThe inlet valves