jax vintage valve components offers you four new super light american made valve systems for the performance flathead engine.

ANY TOP FUEL RACER WILL TELL YOU THAT THE FRESHNESS OF THE VALVE TRAIN IS THE SINGLE MOST IMPORTANT PART OF THE HIGH PERFORMANCE RACING ENGINE, KEEPING THOSE VALVES OPEN AND SHUT WITH A FREE INTAKE FLOW IS THE REASON THE PRO’S SPEND UPWARDS OF $70,000.00 IN A SINGLE SEASON JUST FOR FRESH VALVES AND VALVE SPRINGS ON EVERY QUARTER MILE PASS!  MUCH TIME, ENERGY AND ENGINEERING HAS GONE INTO THE DEVELOPMENT OF OUR NEW POWER-FLO / QUICK-FLO FLATHEAD VALVE SYSTEMS, THE UNDERCUT STEM DESIGNS PERFECTED IN THE LATER HIGH FLOW OVERHEAD DESIGNS INCREASE THE FLATHEADS INTAKE FLOW UP TO 42% IN JUST THE FIRST 150 THOUSANDS OF THE CAMS LIFT, AND ON THE EXHAUST SIDE AN UNBELIEVABLE 93 % . STAINLESS STEEL VALVES MADE OF 21-2N AND 21-4N CONTINUE TO BE THE TOP ALLOYS FOR THE STREET, DIRT TRACKS AND DRAG RACING ENGINES. BOTH STAINLESS ALLOYS CAN HANDLE HIGH HEAT TEMPERATURES, THE 21-2N STAINLESS CONTAINS 21 PERCENT CHROMIUM AND 2 PERCENT NICKLE, THE 21-4N ALSO A CHROMIUM BASE BUT CONTAINS ALMOST TWICE THE NICKLE (3.75 PERCENT) MAKING IT MORE OF A PREMIUM FOR THE FLATHEAD ENGINE AS IT CAN HANDLE HEAT UP TO 1,600 DEGREES. ITS HARDNESS ENABLES THINNER MACHINING IN THE HEAD AREA WITH LESS DANGER OF CRACKING, BURNING OR CHORDAL FRACTURING

OUR NEW BLACK DIAMOND COATING IS A PROCESS THAT REDUCES FRICTION AND PROVIDES SUPERIOR RESISTANCE TO CORROSION AND WEARING … THESE ARE THE FINEST QUALITY FLATHEAD VALVES AVAILABLE TODAY…

note* 5/16″ valves require jax 5/16″ manganese guides.

  • P/N# 127-s Standard stainless 21-2n 11/32″ 1.5 correct (4 inch 82), forged one piece flathead power-flo valves.
  • P/N# 227-r 11/32″ 21-4n 1.5 one piece forged power-flo stainless black diamond coated (nitrated) flathead racing valves.
  • P/N# 327-r 5/16″ 21-4n 1.5 one piece forged quick-flo lite weight stainless black diamond coated (Nitrated) flathead racing valves.
  • P/N# 400-r ultra-lite 5/16″ 1.5 titanium black diamond chromium nitratad coating (CrN). Positive Vapor deposition (also known as pvd) used in nascar and formula 1 racing, now available for your performance flathead engine!
4 sets
Racing Valves
Black Diamond Coated