VALVE INTAKE YZF400 426 -00, PROX 28.2418-3 5BE-12112-10

Hi-Performance Racing Valve INTAKE STAINLESS STEEL.

Size. Head Dia 27.00mm, Stem Dia 4.50mm, Stem Length 84.35,
Prox offers steel and titanium engine valves as well as titanium into steel conversion kits. The ProX titanium valves are manufactured to high quality standards. high tech Ti3al alloy is forged in one-piece for extra strength while the material offers superior material properties at high temperatures the additional CrN coating offers extreme

surface hardness and creates considerably lower friction.The ProX titanium valves do exceed OE specifications in dimensions and reliability. The ProX steel valves are manufactured of premium grade steel to exact OEM specifications and tolerances. The steel valves are made by the leading OEM factories in Japan and are a direct and cost-efficient OEM replacement.

Yamaha WR400F (1998-2000), Yamaha YZ400F (1998-1999), Yamaha YZ426F (2000),

PROX 28.2418-3