Evo & Twin Cam

HQ-1625 exhaust valve 1.625” head, .3095” stem                       diameter, used on stock valve seats.

HQ-1900 .060” oversize intake valve 1.900” head,                     .310” stem diameter. Can be used on stock                valve seats

HQ-1940 .100” oversized intake valve. 1.940” head,                   .310” stem diameter. Requires oversized                    valve seats.
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