big bore cylinder barrel kit yamaha pw50 pw 50 60cc 1981 2019 Yamaha YTZ250 then it's a no brainer

then it's a no brainer to get a new coil on the quad

To replace factory cdi units stamped ACI600-ACI604 OR AC2i

This is a high spec coil so you'll no longer need to use a resistor in the system

Not suitable for Air cooled

This ignition coil has been made to replace 38W-82310-40 on a YTZ250 for the years shown above

big bore cylinder barrel kit yamaha pw50 pw 50 60cc 1981 2019 Yamaha YTZ250 then it's a no brainerBrand new big bore cylinder barrel kit to fit: Yamaha PW 50 (1981 2022). (big bore 60cc upgrade). Upgrade your barrel from 50cc to 60cc with no modifications necessary from the standard PW50. This is the highest quality aftermarket Yamaha PW50 cylinder kit you can get on the market. The performance will meet that of the genuine part and you'll save yourself a bit of money too. Includes Cylinder, Gasket, Piston Kit, Cylinder Head, Spark Plug, Studs and