CNC PORT, 6 Cylinder Assembly:Valve Seals and Final assembly HARDENED STEEL BACKS on all

HARDENED STEEL BACKS on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing

all necessary hardware included

and dominate the off-road terrain like never before

0001" tolerance for maximum ring seal

CNC PORT, 6 Cylinder Assembly:Valve Seals and Final assembly HARDENED STEEL BACKS on allCylinder head cleaning & inspection CNC Runners CNC Newen Valve job CNC Surfacing Final Cleaning Send all cores in with invoice, estimated turnaround is 10 15 business days from time of arrival. Cylinder heads that qualify: B58 Gen 1 & Gen 2 (2 port heads are CNC ported Intake side ONLY) S58 2JZ RB26 (Available Soon) Send all cores in with your sales receipt. All machining and assembly services are available, contact us for a consultation regarding