(Sold in Pairs)


The Maxx 290 is truly a rare breed in today’s market. An As Cast head that is just as efficient as competition’s CNC ported pieces. Independent flow bench testing shows over 400 cfm with 2.300 valves. This head will change the industry. Compare to any brand, this head makes power!

Part Number: N/A Category:
  • 290cc Intake runner
  • 24 degree Intake valve angle
  • 15 degree Exhaust valve angle
  • CNC inspired casting
  • Ultra-smooth casting
  • 356-T6 aluminum
  • Multiple valve sizes available
  • Over 375 cfm
  • .750 deck thickness
  • Diamond honed guides
  • Multiple spring options
  • 5 angle valve job
  • Professional Assembly
  • Machined and Assembled in USA
  • Assemblies include: 21-4N 1pc swirl polished back cut valves, 7/16 studs and guide plates