Guide de soupape admission 250 YZF/WRF 01/13 std
C630 is a blend of copper, nickel, and aluminum. The high copper content gives excellent thermal qualities, the nickel makes the guide tough and wear resistant, and the aluminum brings work hardening characteristics. This bronze alloy allows for tighter clearances than other materials, creating better valve and seat sealing, as well as superior oil control. The expansion qualities of C630 bronze make it especially compatible with aluminum cylinder heads.SOLD BY UNITDo you need help? Do you have any questions?Ask a question and we'll respond promptly, publishing the most interesting questions and answers for others. 
