Here we have a CTC Yamaha TY250/350 mono & TY250Z 84-98 throttle valve return spring.
This is a CTC stainless steel 10% stronger replacement for the discontinued Yamaha part number 434-14331-00.
This is shown as no.5 on the parts diagram, we also have most of the other carburetor parts in stock, if you can not find the part you are looking for in our shop please use the contact us to message us.