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Kibblewhite offers a complete line of performance and racing valvetrain spring kits, guides, springs and more, for the widest variety of valvetrain compoenents for today's applications that work together seemlessly.

Kibblewhite® Spring Kits (Complete)

  • Kibblewhite® offers a complete line of performance and racing spring kits for a wide variety of valvetrain applications.

    Kibblewhite® Valves

    • Black Diamond™: CNC machined from one-piece forgings of EV8 Stainless Steel. Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear.
    • Tensilite®: CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy. Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion, and corrosion resistant.
    • White Diamond™: CNC machined from one-piece forgings of EV8 Stainless Steel or Inconel-751. Electroplated with a 360º anode, to produce an even coat of the highest grade hard chrome finish.

    Kibblewhite® Guides

    • C630 Bronze Guides: Tough and wear resistant with excellent thermal qualities. This bronze alloy allows for tighter clearances than other materials. Creating better valve and seat sealing, as well as superior oil control.
    • Cast Iron Guides: KPMI® R&D has produced a proprietary cast iron blend that thrives in the tough operating conditions of today's engine. KPMI's cast iron provides excellent wear resistance and a superior guide bore finish that is easy on valve stems.

    Kibblewhite® Springs

    • Advanced Spring Design: Springs are engineered for each specific application using proprietary spring design, simulation, and analysis software.
    • Premium Ground Chrome Silicon Wire: To insure maximum spring life, springs are heat treated, shot peened and X-rayed at regular intervals to check for inclusions.

    Kibblewhite® Retainers

    • Heat Treated Steel Retainers: KPMI's proprietary heat treatment process creates a hard outer shell with a non-brittle core, resisting wear and maximizing toughness.
    • Titanium Retainers: To further reduce reciprocating mass, KPMI offers titanium retainers as an alternative to steel.
    • High Performance Coating: CrN coating for high performance applications, to decrease friction and improve wear. Available for any application on request
    • Custom Retainers Available: KPMI® is ready to design a custom retainer to your specifications.

    Kibblewhite® Seals

    • High Temperature Seals: KPMI® Viton® seals operate at a higher temperature than other seal materials.

    Kibblewhite® Valve Seats

    • Powdered Metal Seats: Have exceptional thermal qualities, wear resistance and resistance to micro-welding. This material resists corrosion and burning, and is compatible with all types of fuel blends.
    • Nickel Aluminum Bronze Seats: The product of a two year KPMI® R&D effort, this proprietary bronze alloy is designed specifically for use with titanium valves in high performance applications.

    Kibblewhite® Tappets

    • Solid Construction: Machined from aerospace quality solid steel bar stock.
    • Proprietary Heat Treatment Process: Creates a hard outer shell with a non-brittle core, resisting wear and maximizing toughness
    • High Performance Coating: CrN coating for high performance applications, to decrease friction and improve wear. Available for any application on request
    • Custom Tappets Available: Send KPMI® your requirements so we can develop your next tappet

    Kibblewhite® Keepers

    • Wide Variety of Styles: KPMI® offers radius bead, triple radius bead, and square bead style keepers.
    • High Tensile Heat Treated Steel: Forged or single point machined

    Kibblewhite® Valve Adjustment Shims

    • Heat Treated Steel: Ground and lapped to precise heights

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Kibblewhite Precision Machining | Designing and Manufacturing Quality Valvetrain Since 1936="Kibblewhite