456cc   2.400 x 1.900    1.645 Dual Spring

The 18° Pro Stock style cylinder heads from BRODIX are the Big Dukes. The PB 1800 and PB 1801 were the original designs in this legendary series.

The PB 1802 is a cast ported version of the PB 1800 capable of flowing over 480 cfm. The professionals at BRODIX have contoured each intake port, exhaust port, and combustion chamber to flow its maximum potential out of the box.