WELCOME TO XSFLOW PERFORMANCE
Gain an advantage over the competition with our XS230 high performance SBC cylinder heads! These high flow AC4B castings include 100% CNC ported intake/exhaust runners & combustion chambers and high performance competition 5-angle valve job.
Bare cylinder heads. NO VALVE TRAIN INCLUDED
CNC Ported Intake Ports
CNC Ported Exhaust Ports
CNC Ported Combustion Chambers
High Performance Competition 5-angle Valve Job
Ductile Iron Intake & Exhaust Valve Seats
11/32″ Bronze Valve Guides
Perimeter & Center
14mm x 3/4" w/ Flat Seat
Represent XSFlow in style! Made from super soft fabric with a lightweight feel for all day comfort.
Gain an advantage over the competition with our XS356 high performance BBC cylinder heads! These high flow AC4B castings include 100% CNC ported intake/exhaust runners…
Our high flowing “As-Cast” cylinder heads are made out of high quality AC4B aluminum alloy and feature a street performance 3-angle valve job, bronze valve…