JRPW Attack Series Level 10 Big Block Cylinder Head
JRPW Attack Series Level 10 Big Block Head. 40mm Intake Valve, 33mm Exhaust. Fully machined, ported and polished, and with the exclusive JRPW 3 angle valve job. Assembled and ready for action with dual valve springs, HD retainers and locks, and Stainless valves. Add rocker arms and go!