Unrivaled Customer Service
And Expert Tech Advice!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

ProMaxx Performance 9171

MAXX Series Aluminum Cylinder Heads As-Cast


jegs shipping
FREE Shipping
Estimated ship date 03/27/18 if Ordered Today
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
ProMaxx Performance 9171 MAXX Series Aluminum Cylinder Heads As-Cast $1,099.99
MAXX Series Aluminum Cylinder Heads
  • As-Cast
  • 170cc Intake Ports
  • 72cc Combustion Chambers
  • 2.09'' Intake / 1.66'' Exhaust Valve Sizes
  • Bare, 2/pkg

  • Maxx Quality, Performance and Affordibility!

    The ProMaxx MAXX Series Ford FE 390-428ci Aluminum Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. Even the ''as cast'' runner heads utilize ultra-smooth new runner and chamber designs that produce exceptional flow numbers. The fully CNC'd version is designed by Keith Craft Racing Engines and flow numbers that will make the Ford FE performance crowd, very happy! This combined with a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending, and professional assembly to outperform the best brands in the business.

  • A356-T6 Aluminum Castings
  • Hand bowl blending
  • Efficient chamber design
  • Available bare or assembled
  • 5-angle competition valve job
  • 3/8'' bronze valve guides
  • "MAXX" power for street or strip
  • Sold in pairs

  • Items You Need