KPMI, Valvula Escape guide. C630 Bronze. +.001 "For Harley Davidson

C630 bearing bronze is a resistant nickel, aluminum and bronze alloy that is typically used in racing and high -performance applications where rapid heat transfer from the valve at the head is important.
Note: The standard dimensions not oversized (only as a reference) are 0.4750 "D.E. (12.07 mm); 0.2342" D.I. (5.95 mm); Total length of 1,655 "(42.04 mm).

Adapts to:> 17-21 m8