MWR Valve Set (16) – 1ZZ-FE Stainless (Standard Size)



2000-05 Celica GT, MR2 Spyder
1998-99 Corolla (Does NOT fit 2000+ Corolla or Matrix)
Lotus Elise S with 1.8L 1ZZ-FE engine (not available in US market)

Intake: 32.0mm
Exhaust: 27.5mm

Manufactured to the highest standards, these stainless valves will take just about any reasonable abuse you throw at them.


  • Undercut, back cut, and swirl polished for maximum flow and power at all valve lifts.
  • One piece forged, high temperature, high nickel, stainless steel alloy SAE EV8. This material is stronger and less brittle than the competition’s cheaper 21-2N stainless at high temperatures- critical for forced induction applications.
  • 3-stage heat treatment hardens tip and allows the valves to be super strong and super tough- if they do somehow hit the pistons they often bend rather than breaking, minimizing engine damage. DO NOT try that with the competition’s valves.
  • CNC finished to strict tolerances for the ultimate in fitment and durability.
  • Advanced nitride treatment process that both hardens the surface of the entire valve and reduces friction between the valve stem and guide. This means better high-RPM durability and better all-around efficiency. It also does not flake off like inferior chrome coatings used by the competition.

Includes 8 intake and 8 exhaust valves

Additional information

Weight 2 lbs
Dimensions 5 × 5 × 5 in


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