Genuine Yamaha piston ring set as fitted to all Yamaha TYZ and Scorpa SY250 models.
This ring set covers all size of piston. (A, B, C or D)
We only sell and recommend the D size piston. These bikes are known for piston rattle and the D piston with less clearance reduces that noise.
The piston ring set also come with expansion rings. They may seem tight upon first fitting but will soon bed in. Use these from the word go if you want higher compression. If you do not then they can be omitted and then fitted after a seasons riding which increases the life of the piston & rings.
Yamaha part number: 4GG-11603-01
