• Dual Springs are high-strength chrome silicon
• Seat pressure of 85 psi
• Perform reliably up to 11,000 rpm
• Great for racing applications

Titanium Retainer Features:

KMS titanium retainers are the perfect balance between strength and lightweight design desired for high rpm, high rev applications.

KMS titanium retainers are CNC-machined to exacting tolerances from the strongest aerospace quality titanium.

KMS titanium retainers were designed and manufactured in-house at our product development facility in Covington, Georgia so we can provide a consistent, high-quality retainer at a better price.

Valve Features:

• One piece forged stainless steel, SAE EV8 (UNS S63008)
• Heat treated to obtain hardness and ductility for street performance or racing
• Black Nitrided hardening treatment--very popular for Japanese applications
  The nitrided layer adheres to the base material at a microscopic level and does not flake or break when the valves bend due to impacts with the pistons
  The micro hardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (micro hardness is 800HV minimum)
• Surface finish is smoother than chromed stems--that means less friction between stem and guide
• Valve seat surface is harder with the nitrided layer--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 )
• All valves are swirl polished, have stem undercut and a hardened tip
• Complete set: Includes 8 intake and 8 exhaust valves. All valves are brand new.