KMS Engine Development

Valves-D16Z/Y

KMS Honda D16Z/Y8/D17 GSR Performance Race Valves

Valve Parts

Stainless Steel Racing Valves for Honda D16Z/Y8/D17 Series
One-piece forged stainless steel, SAE EV8 (UNS S6 3008), Heat treated for hardness and ductility.
Black nitrited hardening treament, Swirl polished, undercut stem.
Completed set: 8 Intake & 8 Exhaust.
The black nitride layer reduces this power loss due to less valve-guide friction.

Stainless Steel Racing Valves for Honda D16Z/Y8/D17 Series. We believe these are among the best valves you can buy. Exceptional for street performance. A must have for turbo and NOS! One-piece forged stainless steel, SAE EV8 (UNS S6 3008), Heat treated for hardness and ductility, Black nitrited hardening treament, Swirl polished, undercut stem, complete set of intake and exhaust valves. WHY ARE THESE BETTER VALVES? Remember the higher the engine the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction. Plus Nitrided layer microscopically adheres to the base material and does not flake or break when valves bend due to piston impacts. Microhardness (800HV minimum) is the higher than stainless steel base material, keeping good ductility beneath the hard nitrided layer. Surface finish is smoother than chromed stems - that means less friction between stem and guide. Nitrided valves seat surface is harder - that means they last longer with lead free fuels, alcohols, nitro or other explosive mixes. Matches any seat - nodular iron, steel powder metal, hard aluminum-copper, or beryllium copper.

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