Motorcycle part-piston ring:
1.The oil ring is of a mirror wave type, and will not affect theoil contrel function by non-stable axial support resulted from the sleeve ring being froced furing operation.
2.A changeable incline angel is formed bu sleeve spring with respect to radical support base of scraper so as to ensure that the scraper close tightly the end face of ring groove.  As a result, the oil control capability of end face is improved to reduce oil consumption.
3.The pitch has, in a certain range, a resonable freedom.  The designed elastic force can be effectively met for the manufacturing size of same cylinder diameter.  The iron kvi-k9 meets the requirements of Japanese corp. aisj9254 jrd9254 crsi70.